72210578 has 16 divisors (see below), whose sum is σ = 119784096. Its totient is φ = 32372640.

The previous prime is 72210571. The next prime is 72210587. The reversal of 72210578 is 87501227.

It is not an unprimeable number, because it can be changed into a prime (72210571) 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, 20876 + ... + 24087.

It is an arithmetic number, because the mean of its divisors is an integer number (7486506).

Almost surely, 2^72210578 is an apocalyptic number.

72210578 is a deficient number, since it is larger than the sum of its proper divisors (47573518).

72210578 is a wasteful number, since it uses less digits than its factorization.

72210578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45049.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 72210578 is about 8497.6807424144. The cubic root of 72210578 is about 416.4219438317.

The spelling of 72210578 in words is "seventy-two million, two hundred ten thousand, five hundred seventy-eight".