172166044 has 12 divisors (see below), whose sum is σ = 302806000. Its totient is φ = 85650048.

The previous prime is 172166039. The next prime is 172166051. The reversal of 172166044 is 440661271.

It is a super-2 number, since 2×172166044² = 59282293413219872, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 172165997 and 172166015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107349 + ... + 108940.

Almost surely, 2^172166044 is an apocalyptic number.

It is an amenable number.

172166044 is a deficient number, since it is larger than the sum of its proper divisors (130639956).

172166044 is a wasteful number, since it uses less digits than its factorization.

172166044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216492 (or 216490 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 172166044 is about 13121.2058897039. The cubic root of 172166044 is about 556.3086764850.

The spelling of 172166044 in words is "one hundred seventy-two million, one hundred sixty-six thousand, forty-four".