164257632 has 240 divisors, whose sum is σ = 603009792. Its totient is φ = 42612480.

The previous prime is 164257627. The next prime is 164257633. The reversal of 164257632 is 236752461.

164257632 is a `hidden beast` number, since 1 + 642 + 5 + 7 + 6 + 3 + 2 = 666.

164257632 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 (164257633) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 199173 + ... + 199995.

Almost surely, 2^164257632 is an apocalyptic number.

164257632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 164257632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301504896).

164257632 is an abundant number, since it is smaller than the sum of its proper divisors (438752160).

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

164257632 is a wasteful number, since it uses less digits than its factorization.

164257632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863 (or 846 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 164257632 is about 12816.3033671960. The cubic root of 164257632 is about 547.6568437863.

The spelling of 164257632 in words is "one hundred sixty-four million, two hundred fifty-seven thousand, six hundred thirty-two".