72356234 has 4 divisors (see below), whose sum is σ = 108534354. Its totient is φ = 36178116.

The previous prime is 72356231. The next prime is 72356261. The reversal of 72356234 is 43265327.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 72301009 + 55225 = 8503^2 + 235^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72356234.

It is not an unprimeable number, because it can be changed into a prime (72356231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18089057 + ... + 18089060.

Almost surely, 2^72356234 is an apocalyptic number.

72356234 is a deficient number, since it is larger than the sum of its proper divisors (36178120).

72356234 is a wasteful number, since it uses less digits than its factorization.

72356234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36178119.

The product of its digits is 30240, while the sum is 32.

The square root of 72356234 is about 8506.2467634086. The cubic root of 72356234 is about 416.7017441047.

The spelling of 72356234 in words is "seventy-two million, three hundred fifty-six thousand, two hundred thirty-four".