162638172 has 48 divisors (see below), whose sum is σ = 422368800. Its totient is φ = 54120960.

The previous prime is 162638171. The next prime is 162638191. The reversal of 162638172 is 271836261.

162638172 is a `hidden beast` number, since 1 + 6 + 2 + 638 + 17 + 2 = 666.

162638172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162638171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99522 + ... + 101142.

It is an arithmetic number, because the mean of its divisors is an integer number (8799350).

Almost surely, 2^162638172 is an apocalyptic number.

162638172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

162638172 is an abundant number, since it is smaller than the sum of its proper divisors (259730628).

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

162638172 is a wasteful number, since it uses less digits than its factorization.

162638172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2563 (or 2555 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 162638172 is about 12752.9671841497. The cubic root of 162638172 is about 545.8510643166.

The spelling of 162638172 in words is "one hundred sixty-two million, six hundred thirty-eight thousand, one hundred seventy-two".