72894231 has 12 divisors (see below), whose sum is σ = 105470352. Its totient is φ = 48513696.

The previous prime is 72894229. The next prime is 72894253. The reversal of 72894231 is 13249827.

It is not a de Polignac number, because 72894231 - 2¹ = 72894229 is a prime.

It is a super-2 number, since 2×72894231² = 10627137826162722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72894131) 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, 1011 + ... + 12116.

It is an arithmetic number, because the mean of its divisors is an integer number (8789196).

Almost surely, 2^72894231 is an apocalyptic number.

72894231 is a deficient number, since it is larger than the sum of its proper divisors (32576121).

72894231 is a wasteful number, since it uses less digits than its factorization.

72894231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13750 (or 13747 counting only the distinct ones).

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

The square root of 72894231 is about 8537.8118391073. The cubic root of 72894231 is about 417.7319752587.

The spelling of 72894231 in words is "seventy-two million, eight hundred ninety-four thousand, two hundred thirty-one".