72235947 has 18 divisors (see below), whose sum is σ = 112199484. Its totient is φ = 41218800.

The previous prime is 72235931. The next prime is 72235957. The reversal of 72235947 is 74953227.

It is not a de Polignac number, because 72235947 - 2⁴ = 72235931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72235957) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 102697 + ... + 103397.

Almost surely, 2^72235947 is an apocalyptic number.

72235947 is a deficient number, since it is larger than the sum of its proper divisors (39963537).

72235947 is an frugal number, since it uses more digits than its factorization.

72235947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1419 (or 711 counting only the distinct ones).

The product of its digits is 105840, while the sum is 39.

The square root of 72235947 is about 8499.1733127405. The cubic root of 72235947 is about 416.4707038688.

The spelling of 72235947 in words is "seventy-two million, two hundred thirty-five thousand, nine hundred forty-seven".