72230815 has 8 divisors (see below), whose sum is σ = 87067008. Its totient is φ = 57524640.

The previous prime is 72230813. The next prime is 72230827. The reversal of 72230815 is 51803227.

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

It is not a de Polignac number, because 72230815 - 2¹ = 72230813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72230813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31276 + ... + 33505.

It is an arithmetic number, because the mean of its divisors is an integer number (10883376).

Almost surely, 2^72230815 is an apocalyptic number.

72230815 is a deficient number, since it is larger than the sum of its proper divisors (14836193).

72230815 is a wasteful number, since it uses less digits than its factorization.

72230815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65009.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 72230815 is about 8498.8713956619. The cubic root of 72230815 is about 416.4608409203.

The spelling of 72230815 in words is "seventy-two million, two hundred thirty thousand, eight hundred fifteen".