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72479484 = 223271122377
BaseRepresentation
bin1000101000111…
…11001011111100
312001101100011100
410110133023330
5122023320414
611105253100
71540031310
oct424371374
9161340140
1072479484
1137a04a00
1220334190
131202928c
1498a9b40
15656a609
hex451f2fc

72479484 has 108 divisors (see below), whose sum is σ = 230247472. Its totient is φ = 18817920.

The previous prime is 72479453. The next prime is 72479489. The reversal of 72479484 is 48497427.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72479489) 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, 29304 + ... + 31680.

Almost surely, 272479484 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72479484, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115123736).

72479484 is an abundant number, since it is smaller than the sum of its proper divisors (157767988).

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

72479484 is a wasteful number, since it uses less digits than its factorization.

72479484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2416 (or 2400 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 72479484 is about 8513.4883567196. The cubic root of 72479484 is about 416.9382100534.

It can be divided in two parts, 724 and 79484, that added together give a palindrome (80208).

The spelling of 72479484 in words is "seventy-two million, four hundred seventy-nine thousand, four hundred eighty-four".

Divisors: 1 2 3 4 6 7 9 11 12 14 18 21 22 28 33 36 42 44 63 66 77 84 99 121 126 132 154 198 231 242 252 308 363 396 462 484 693 726 847 924 1089 1386 1452 1694 2178 2377 2541 2772 3388 4356 4754 5082 7131 7623 9508 10164 14262 15246 16639 21393 26147 28524 30492 33278 42786 49917 52294 66556 78441 85572 99834 104588 149751 156882 183029 199668 235323 287617 299502 313764 366058 470646 549087 575234 599004 732116 862851 941292 1098174 1150468 1647261 1725702 2013319 2196348 2588553 3294522 3451404 4026638 5177106 6039957 6589044 8053276 10354212 12079914 18119871 24159828 36239742 72479484