20167172 has 12 divisors (see below), whose sum is σ = 36113616. Its totient is φ = 9849000.

The previous prime is 20167171. The next prime is 20167177. The reversal of 20167172 is 27176102.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20167171) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 58454 + ... + 58797.

It is an arithmetic number, because the mean of its divisors is an integer number (3009468).

Almost surely, 2^20167172 is an apocalyptic number.

It is an amenable number.

20167172 is a deficient number, since it is larger than the sum of its proper divisors (15946444).

20167172 is a wasteful number, since it uses less digits than its factorization.

20167172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117298 (or 117296 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 20167172 is about 4490.7874587872. The cubic root of 20167172 is about 272.1959552486.

The spelling of 20167172 in words is "twenty million, one hundred sixty-seven thousand, one hundred seventy-two".