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72884952 = 23327273283
BaseRepresentation
bin1000101100000…
…10001011011000
312002010221100200
410112002023120
5122124304302
611122102200
71543340400
oct426021330
9162127320
1072884952
11381615a8
12204aa960
131213b9ba
149973800
1565ea81c
hex45822d8

72884952 has 144 divisors (see below), whose sum is σ = 233592840. Its totient is φ = 20466432.

The previous prime is 72884951. The next prime is 72884983. The reversal of 72884952 is 25948827.

It is a junction number, because it is equal to n+sod(n) for n = 72884898 and 72884907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72884951) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 257403 + ... + 257685.

Almost surely, 272884952 is an apocalyptic number.

72884952 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72884952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116796420).

72884952 is an abundant number, since it is smaller than the sum of its proper divisors (160707888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72884952 is a wasteful number, since it uses less digits than its factorization.

72884952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382 (or 368 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 72884952 is about 8537.2684155999. The cubic root of 72884952 is about 417.7142495786.

The spelling of 72884952 in words is "seventy-two million, eight hundred eighty-four thousand, nine hundred fifty-two".

Divisors: 1 2 3 4 6 7 8 9 12 14 18 21 24 28 36 42 49 56 63 72 73 84 98 126 146 147 168 196 219 252 283 292 294 392 438 441 504 511 566 584 588 657 849 876 882 1022 1132 1176 1314 1533 1698 1752 1764 1981 2044 2264 2547 2628 3066 3396 3528 3577 3962 4088 4599 5094 5256 5943 6132 6792 7154 7924 9198 10188 10731 11886 12264 13867 14308 15848 17829 18396 20376 20659 21462 23772 27734 28616 32193 35658 36792 41318 41601 42924 47544 55468 61977 64386 71316 82636 83202 85848 110936 123954 124803 128772 142632 144613 165272 166404 185931 247908 249606 257544 289226 332808 371862 433839 495816 499212 578452 743724 867678 998424 1012291 1156904 1301517 1487448 1735356 2024582 2603034 3036873 3470712 4049164 5206068 6073746 8098328 9110619 10412136 12147492 18221238 24294984 36442476 72884952