172214290 has 16 divisors (see below), whose sum is σ = 326301120. Its totient is φ = 65260080.

The previous prime is 172214281. The next prime is 172214291. The reversal of 172214290 is 92412271.

It is not an unprimeable number, because it can be changed into a prime (172214291) 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, 453006 + ... + 453385.

It is an arithmetic number, because the mean of its divisors is an integer number (20393820).

Almost surely, 2^172214290 is an apocalyptic number.

172214290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172214290 is a deficient number, since it is larger than the sum of its proper divisors (154086830).

172214290 is a wasteful number, since it uses less digits than its factorization.

172214290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906417.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 172214290 is about 13123.0442352375. The cubic root of 172214290 is about 556.3606363277.

It can be divided in two parts, 17221 and 4290, that multiplied together give a triangular number (73878090 = T₁₂₁₅₅).

The spelling of 172214290 in words is "one hundred seventy-two million, two hundred fourteen thousand, two hundred ninety".