172420264 has 16 divisors (see below), whose sum is σ = 333717120. Its totient is φ = 83429040.

The previous prime is 172420253. The next prime is 172420271. The reversal of 172420264 is 462024271.

It is a happy number.

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 3 ways as a sum of consecutive naturals, for example, 347374 + ... + 347869.

It is an arithmetic number, because the mean of its divisors is an integer number (20857320).

Almost surely, 2^172420264 is an apocalyptic number.

It is an amenable number.

172420264 is a deficient number, since it is larger than the sum of its proper divisors (161296856).

172420264 is a wasteful number, since it uses less digits than its factorization.

172420264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695280 (or 695276 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 172420264 is about 13130.8896880600. The cubic root of 172420264 is about 556.5823565447.

The spelling of 172420264 in words is "one hundred seventy-two million, four hundred twenty thousand, two hundred sixty-four".