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72814293 = 328399643
BaseRepresentation
bin1000101011100…
…00111011010101
312002000100102200
410111300323111
5122120024133
611120355113
71542624366
oct425607325
9162010380
1072814293
1138113502
1220475a99
13121157a6
149955b6d
1565d4913
hex4570ed5

72814293 has 12 divisors (see below), whose sum is σ = 105312480. Its totient is φ = 48479976.

The previous prime is 72814283. The next prime is 72814333. The reversal of 72814293 is 39241827.

It is not a de Polignac number, because 72814293 - 28 = 72814037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72814223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2730 + ... + 12372.

It is an arithmetic number, because the mean of its divisors is an integer number (8776040).

Almost surely, 272814293 is an apocalyptic number.

It is an amenable number.

72814293 is a deficient number, since it is larger than the sum of its proper divisors (32498187).

72814293 is a wasteful number, since it uses less digits than its factorization.

72814293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10488 (or 10485 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 72814293 is about 8533.1291446925. The cubic root of 72814293 is about 417.5792202689.

The spelling of 72814293 in words is "seventy-two million, eight hundred fourteen thousand, two hundred ninety-three".

Divisors: 1 3 9 839 2517 7551 9643 28929 86787 8090477 24271431 72814293