220715394 has 16 divisors (see below), whose sum is σ = 442314432. Its totient is φ = 73424528.

The previous prime is 220715389. The next prime is 220715399. The reversal of 220715394 is 493517022.

220715394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (220715389) and next prime (220715399).

It is not an unprimeable number, because it can be changed into a prime (220715399) 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, 33549 + ... + 39584.

It is an arithmetic number, because the mean of its divisors is an integer number (27644652).

Almost surely, 2^220715394 is an apocalyptic number.

220715394 is an abundant number, since it is smaller than the sum of its proper divisors (221599038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220715394 is a wasteful number, since it uses less digits than its factorization.

220715394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73641.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 220715394 is about 14856.4933278348. The cubic root of 220715394 is about 604.3347138996.

The spelling of 220715394 in words is "two hundred twenty million, seven hundred fifteen thousand, three hundred ninety-four".