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72805083 = 3137092633
BaseRepresentation
bin1000101011011…
…10101011011011
312001222212210120
410111232223123
5122114230313
611120244323
71542555501
oct425565333
9161885716
1072805083
113810759a
12204706a3
1312111540
149952671
1565d1d23
hex456eadb

72805083 has 16 divisors (see below), whose sum is σ = 104727840. Its totient is φ = 44722944.

The previous prime is 72805037. The next prime is 72805087. The reversal of 72805083 is 38050827.

It is not a de Polignac number, because 72805083 - 214 = 72788699 is a prime.

It is a super-2 number, since 2×728050832 = 10601160221273778, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72805087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26335 + ... + 28967.

It is an arithmetic number, because the mean of its divisors is an integer number (6545490).

Almost surely, 272805083 is an apocalyptic number.

72805083 is a deficient number, since it is larger than the sum of its proper divisors (31922757).

72805083 is a wasteful number, since it uses less digits than its factorization.

72805083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3358.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 72805083 is about 8532.5894662758. The cubic root of 72805083 is about 417.5616135298.

The spelling of 72805083 in words is "seventy-two million, eight hundred five thousand, eighty-three".

Divisors: 1 3 13 39 709 2127 2633 7899 9217 27651 34229 102687 1866797 5600391 24268361 72805083