72234407 has 4 divisors (see below), whose sum is σ = 82553616. Its totient is φ = 61915200.

The previous prime is 72234403. The next prime is 72234419. The reversal of 72234407 is 70443227.

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

It is a cyclic number.

It is not a de Polignac number, because 72234407 - 2² = 72234403 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72234407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72234401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5159594 + ... + 5159607.

It is an arithmetic number, because the mean of its divisors is an integer number (20638404).

Almost surely, 2^72234407 is an apocalyptic number.

72234407 is a deficient number, since it is larger than the sum of its proper divisors (10319209).

72234407 is a wasteful number, since it uses less digits than its factorization.

72234407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10319208.

The product of its (nonzero) digits is 9408, while the sum is 29.

The square root of 72234407 is about 8499.0827152111. The cubic root of 72234407 is about 416.4677442646.

The spelling of 72234407 in words is "seventy-two million, two hundred thirty-four thousand, four hundred seven".