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72814885 = 51113101839
BaseRepresentation
bin1000101011100…
…01000100100101
312002000101020121
410111301010211
5122120034020
611120401541
71542626203
oct425610445
9162011217
1072814885
11381139a0
12204762b1
1312115b40
149956073
1565d4baa
hex4571125

72814885 has 16 divisors (see below), whose sum is σ = 102654720. Its totient is φ = 48882240.

The previous prime is 72814883. The next prime is 72814913. The reversal of 72814885 is 58841827.

It is not a de Polignac number, because 72814885 - 21 = 72814883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72814883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50205 + ... + 51634.

It is an arithmetic number, because the mean of its divisors is an integer number (6415920).

Almost surely, 272814885 is an apocalyptic number.

It is an amenable number.

72814885 is a deficient number, since it is larger than the sum of its proper divisors (29839835).

72814885 is a wasteful number, since it uses less digits than its factorization.

72814885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101868.

The product of its digits is 143360, while the sum is 43.

The square root of 72814885 is about 8533.1638329520. The cubic root of 72814885 is about 417.5803519434.

The spelling of 72814885 in words is "seventy-two million, eight hundred fourteen thousand, eight hundred eighty-five".

Divisors: 1 5 11 13 55 65 143 715 101839 509195 1120229 1323907 5601145 6619535 14562977 72814885