72022170 has 32 divisors (see below), whose sum is σ = 188568000. Its totient is φ = 17459840.

The previous prime is 72022169. The next prime is 72022193. The reversal of 72022170 is 7122027.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108795 + ... + 109454.

It is an arithmetic number, because the mean of its divisors is an integer number (5892750).

Almost surely, 2^72022170 is an apocalyptic number.

72022170 is an abundant number, since it is smaller than the sum of its proper divisors (116545830).

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

72022170 is a wasteful number, since it uses less digits than its factorization.

72022170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218270.

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 72022170 is about 8486.5876534683. The cubic root of 72022170 is about 416.0594597270.

Adding to 72022170 its reverse (7122027), we get a palindrome (79144197).

The spelling of 72022170 in words is "seventy-two million, twenty-two thousand, one hundred seventy".