172220070 has 32 divisors (see below), whose sum is σ = 450904320. Its totient is φ = 41750240.

The previous prime is 172220063. The next prime is 172220093. The reversal of 172220070 is 70022271.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260610 + ... + 261269.

It is an arithmetic number, because the mean of its divisors is an integer number (14090760).

Almost surely, 2^172220070 is an apocalyptic number.

172220070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172220070 is an abundant number, since it is smaller than the sum of its proper divisors (278684250).

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

172220070 is a wasteful number, since it uses less digits than its factorization.

172220070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521900.

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

The square root of 172220070 is about 13123.2644566815. The cubic root of 172220070 is about 556.3668606050.

The spelling of 172220070 in words is "one hundred seventy-two million, two hundred twenty thousand, seventy".