72384231 has 4 divisors (see below), whose sum is σ = 96512312. Its totient is φ = 48256152.

The previous prime is 72384223. The next prime is 72384233. The reversal of 72384231 is 13248327.

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

It is not a de Polignac number, because 72384231 - 2³ = 72384223 is a prime.

It is a super-2 number, since 2×72384231² = 10478953794922722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72384233) 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, 12064036 + ... + 12064041.

It is an arithmetic number, because the mean of its divisors is an integer number (24128078).

Almost surely, 2^72384231 is an apocalyptic number.

72384231 is a deficient number, since it is larger than the sum of its proper divisors (24128081).

72384231 is a wasteful number, since it uses less digits than its factorization.

72384231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24128080.

The product of its digits is 8064, while the sum is 30.

The square root of 72384231 is about 8507.8922771742. The cubic root of 72384231 is about 416.7554823647.

The spelling of 72384231 in words is "seventy-two million, three hundred eighty-four thousand, two hundred thirty-one".