72234891 has 6 divisors (see below), whose sum is σ = 104339300. Its totient is φ = 48156588.

The previous prime is 72234889. The next prime is 72234947. The reversal of 72234891 is 19843227.

It is not a de Polignac number, because 72234891 - 2¹ = 72234889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72234391) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4013041 + ... + 4013058.

Almost surely, 2^72234891 is an apocalyptic number.

72234891 is a deficient number, since it is larger than the sum of its proper divisors (32104409).

72234891 is a wasteful number, since it uses less digits than its factorization.

72234891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8026105 (or 8026102 counting only the distinct ones).

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

The square root of 72234891 is about 8499.1111888244. Note that the first 4 decimals coincide. The cubic root of 72234891 is about 416.4686744305.

The spelling of 72234891 in words is "seventy-two million, two hundred thirty-four thousand, eight hundred ninety-one".