172528916 has 24 divisors (see below), whose sum is σ = 352402176. Its totient is φ = 72367200.

The previous prime is 172528913. The next prime is 172528973. The reversal of 172528916 is 619825271.

It is a super-2 number, since 2×172528916² = 59532453712270112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172528913) 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, 64235 + ... + 66866.

It is an arithmetic number, because the mean of its divisors is an integer number (14683424).

Almost surely, 2^172528916 is an apocalyptic number.

It is an amenable number.

172528916 is an abundant number, since it is smaller than the sum of its proper divisors (179873260).

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

172528916 is a wasteful number, since it uses less digits than its factorization.

172528916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131159 (or 131157 counting only the distinct ones).

The product of its digits is 60480, while the sum is 41.

The square root of 172528916 is about 13135.0263037422. The cubic root of 172528916 is about 556.6992435945.

The spelling of 172528916 in words is "one hundred seventy-two million, five hundred twenty-eight thousand, nine hundred sixteen".