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72049876 = 22171059557
BaseRepresentation
bin1000100101101…
…10010011010100
312000120111211221
410102312103110
5121421044001
611052140124
71533261643
oct422662324
9160514757
1072049876
1137741158
1220167644
1311c08882
1497d735a
1564d31a1
hex44b64d4

72049876 has 12 divisors (see below), whose sum is σ = 133504308. Its totient is φ = 33905792.

The previous prime is 72049871. The next prime is 72049889. The reversal of 72049876 is 67894027.

It can be written as a sum of positive squares in 2 ways, for example, as 47941776 + 24108100 = 6924^2 + 4910^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72049871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 529711 + ... + 529846.

It is an arithmetic number, because the mean of its divisors is an integer number (11125359).

Almost surely, 272049876 is an apocalyptic number.

It is an amenable number.

72049876 is a deficient number, since it is larger than the sum of its proper divisors (61454432).

72049876 is a wasteful number, since it uses less digits than its factorization.

72049876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059578 (or 1059576 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 72049876 is about 8488.2198369269. The cubic root of 72049876 is about 416.1128037902.

The spelling of 72049876 in words is "seventy-two million, forty-nine thousand, eight hundred seventy-six".

Divisors: 1 2 4 17 34 68 1059557 2119114 4238228 18012469 36024938 72049876