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72789852 = 223172139151
BaseRepresentation
bin1000101011010…
…10111101011100
312001222002220110
410111222331130
5122113233402
611120050020
71542463212
oct425527534
9161862813
1072789852
11380a7103
1220463910
1312107625
14994acb2
1565cc56c
hex456af5c

72789852 has 72 divisors (see below), whose sum is σ = 182922880. Its totient is φ = 22521600.

The previous prime is 72789823. The next prime is 72789907. The reversal of 72789852 is 25898727.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 481977 + ... + 482127.

Almost surely, 272789852 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 72789852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91461440).

72789852 is an abundant number, since it is smaller than the sum of its proper divisors (110133028).

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

72789852 is a wasteful number, since it uses less digits than its factorization.

72789852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331 (or 312 counting only the distinct ones).

The product of its digits is 564480, while the sum is 48.

The square root of 72789852 is about 8531.6969003827. The cubic root of 72789852 is about 417.5324931982.

The spelling of 72789852 in words is "seventy-two million, seven hundred eighty-nine thousand, eight hundred fifty-two".

Divisors: 1 2 3 4 6 12 17 34 51 68 102 139 151 204 278 289 302 417 453 556 578 604 834 867 906 1156 1668 1734 1812 2363 2567 3468 4726 5134 7089 7701 9452 10268 14178 15402 20989 28356 30804 40171 41978 43639 62967 80342 83956 87278 120513 125934 130917 160684 174556 241026 251868 261834 356813 482052 523668 713626 1070439 1427252 2140878 4281756 6065821 12131642 18197463 24263284 36394926 72789852