164156472 has 72 divisors (see below), whose sum is σ = 460619640. Its totient is φ = 52812480.

The previous prime is 164156459. The next prime is 164156483. The reversal of 164156472 is 274651461.

164156472 is a `hidden beast` number, since 1 + 6 + 4 + 1 + 5 + 647 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 59197 + ... + 61907.

It is an arithmetic number, because the mean of its divisors is an integer number (6397495).

Almost surely, 2^164156472 is an apocalyptic number.

164156472 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 164156472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230309820).

164156472 is an abundant number, since it is smaller than the sum of its proper divisors (296463168).

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

164156472 is a wasteful number, since it uses less digits than its factorization.

164156472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2781 (or 2745 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 164156472 is about 12812.3562235835. The cubic root of 164156472 is about 547.5443937231.

The spelling of 164156472 in words is "one hundred sixty-four million, one hundred fifty-six thousand, four hundred seventy-two".