172980470 has 32 divisors (see below), whose sum is σ = 349900992. Its totient is φ = 61091712.

The previous prime is 172980463. The next prime is 172980481. The reversal of 172980470 is 74089271.

172980470 = 1169² + 1170² + ... + 1283².

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25937 + ... + 31916.

It is an arithmetic number, because the mean of its divisors is an integer number (10934406).

Almost surely, 2^172980470 is an apocalyptic number.

172980470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172980470 is an abundant number, since it is smaller than the sum of its proper divisors (176920522).

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

172980470 is a wasteful number, since it uses less digits than its factorization.

172980470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57896.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 172980470 is about 13152.2039978096. The cubic root of 172980470 is about 557.1844970913.

The spelling of 172980470 in words is "one hundred seventy-two million, nine hundred eighty thousand, four hundred seventy".