72831047 has 8 divisors (see below), whose sum is σ = 78534960. Its totient is φ = 67314240.

The previous prime is 72831029. The next prime is 72831053. The reversal of 72831047 is 74013827.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72831047 - 2²⁴ = 56053831 is a prime.

It is a super-2 number, since 2×72831047² = 10608722814232418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72831007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45968 + ... + 47525.

It is an arithmetic number, because the mean of its divisors is an integer number (9816870).

Almost surely, 2^72831047 is an apocalyptic number.

72831047 is a deficient number, since it is larger than the sum of its proper divisors (5703913).

72831047 is a wasteful number, since it uses less digits than its factorization.

72831047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93553.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 72831047 is about 8534.1107914064. The cubic root of 72831047 is about 417.6112450517.

The spelling of 72831047 in words is "seventy-two million, eight hundred thirty-one thousand, forty-seven".