172402272 has 72 divisors (see below), whose sum is σ = 560313936. Its totient is φ = 49257216.

The previous prime is 172402261. The next prime is 172402301. The reversal of 172402272 is 272204271.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40743 + ... + 44774.

It is an arithmetic number, because the mean of its divisors is an integer number (7782138).

Almost surely, 2^172402272 is an apocalyptic number.

172402272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

172402272 is an abundant number, since it is smaller than the sum of its proper divisors (387911664).

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

172402272 is a wasteful number, since it uses less digits than its factorization.

172402272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85540 (or 85529 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 172402272 is about 13130.2045680941. The cubic root of 172402272 is about 556.5629961403.

The spelling of 172402272 in words is "one hundred seventy-two million, four hundred two thousand, two hundred seventy-two".