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72477468 = 223272181227
BaseRepresentation
bin1000101000111…
…10101100011100
312001101020101200
410110132230130
5122023234333
611105235500
71540022400
oct424365434
9161336350
1072477468
1137a03438
1220332b90
131202839b
1498a9100
156569c13
hex451eb1c

72477468 has 108 divisors (see below), whose sum is σ = 215239752. Its totient is φ = 20502720.

The previous prime is 72477437. The next prime is 72477469. The reversal of 72477468 is 86477427.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72477469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 319171 + ... + 319397.

Almost surely, 272477468 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 72477468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107619876).

72477468 is an abundant number, since it is smaller than the sum of its proper divisors (142762284).

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

72477468 is a wasteful number, since it uses less digits than its factorization.

72477468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432 (or 420 counting only the distinct ones).

The product of its digits is 526848, while the sum is 45.

The square root of 72477468 is about 8513.3699555464. The cubic root of 72477468 is about 416.9343443377.

The spelling of 72477468 in words is "seventy-two million, four hundred seventy-seven thousand, four hundred sixty-eight".

Divisors: 1 2 3 4 6 7 9 12 14 18 21 28 36 42 49 63 84 98 126 147 181 196 227 252 294 362 441 454 543 588 681 724 882 908 1086 1267 1362 1589 1629 1764 2043 2172 2534 2724 3178 3258 3801 4086 4767 5068 6356 6516 7602 8172 8869 9534 11123 11403 14301 15204 17738 19068 22246 22806 26607 28602 33369 35476 41087 44492 45612 53214 57204 66738 79821 82174 100107 106428 123261 133476 159642 164348 200214 246522 287609 319284 369783 400428 493044 575218 739566 862827 1150436 1479132 1725654 2013263 2588481 3451308 4026526 5176962 6039789 8053052 10353924 12079578 18119367 24159156 36238734 72477468