72231245 has 8 divisors (see below), whose sum is σ = 88521984. Its totient is φ = 56555344.

The previous prime is 72231233. The next prime is 72231253. The reversal of 72231245 is 54213227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72231245 - 2¹⁸ = 71969101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153449 + ... + 153918.

It is an arithmetic number, because the mean of its divisors is an integer number (11065248).

Almost surely, 2^72231245 is an apocalyptic number.

It is an amenable number.

72231245 is a deficient number, since it is larger than the sum of its proper divisors (16290739).

72231245 is a wasteful number, since it uses less digits than its factorization.

72231245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307419.

The product of its digits is 3360, while the sum is 26.

The square root of 72231245 is about 8498.8966931008. The cubic root of 72231245 is about 416.4616673350.

The spelling of 72231245 in words is "seventy-two million, two hundred thirty-one thousand, two hundred forty-five".