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72941568 = 2163753
BaseRepresentation
bin1000101100100…
…00000000000000
312002020211000120
410112100000000
5122133112233
611123220240
71543664430
oct426200000
9162224016
1072941568
11381a0097
1220517680
131215b6bb
14998a2c0
15660c4b3
hex4590000

72941568 has 136 divisors (see below), whose sum is σ = 226490688. Its totient is φ = 20447232.

The previous prime is 72941537. The next prime is 72941573. The reversal of 72941568 is 86514927.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1376230 + ... + 1376282.

Almost surely, 272941568 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 72941568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113245344).

72941568 is an abundant number, since it is smaller than the sum of its proper divisors (153549120).

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

72941568 is an frugal number, since it uses more digits than its factorization.

72941568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95 (or 65 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 72941568 is about 8540.5835866175. The cubic root of 72941568 is about 417.8223797594.

The spelling of 72941568 in words is "seventy-two million, nine hundred forty-one thousand, five hundred sixty-eight".

Divisors: 1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 53 56 64 84 96 106 112 128 159 168 192 212 224 256 318 336 371 384 424 448 512 636 672 742 768 848 896 1024 1113 1272 1344 1484 1536 1696 1792 2048 2226 2544 2688 2968 3072 3392 3584 4096 4452 5088 5376 5936 6144 6784 7168 8192 8904 10176 10752 11872 12288 13568 14336 16384 17808 20352 21504 23744 24576 27136 28672 32768 35616 40704 43008 47488 49152 54272 57344 65536 71232 81408 86016 94976 98304 108544 114688 142464 162816 172032 189952 196608 217088 229376 284928 325632 344064 379904 434176 458752 569856 651264 688128 759808 868352 1139712 1302528 1376256 1519616 1736704 2279424 2605056 3039232 3473408 4558848 5210112 6078464 9117696 10420224 12156928 18235392 24313856 36470784 72941568