172016532 has 18 divisors (see below), whose sum is σ = 434819658. Its totient is φ = 57338832.

The previous prime is 172016521. The next prime is 172016549. The reversal of 172016532 is 235610271.

It is a happy number.

172016532 is a `hidden beast` number, since 1 + 7 + 2 + 0 + 1 + 653 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 152621316 + 19395216 = 12354^2 + 4404^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 172016496 and 172016505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2389083 + ... + 2389154.

Almost surely, 2^172016532 is an apocalyptic number.

172016532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

172016532 is an abundant number, since it is smaller than the sum of its proper divisors (262803126).

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

172016532 is a wasteful number, since it uses less digits than its factorization.

172016532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4778247 (or 4778242 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 172016532 is about 13115.5073100510. The cubic root of 172016532 is about 556.1475937896.

The spelling of 172016532 in words is "one hundred seventy-two million, sixteen thousand, five hundred thirty-two".