164887428 has 48 divisors (see below), whose sum is σ = 390567744. Its totient is φ = 54136320.

The previous prime is 164887409. The next prime is 164887433. The reversal of 164887428 is 824788461.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 360576 + ... + 361032.

It is an arithmetic number, because the mean of its divisors is an integer number (8136828).

Almost surely, 2^164887428 is an apocalyptic number.

It is an amenable number.

164887428 is an abundant number, since it is smaller than the sum of its proper divisors (225680316).

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

164887428 is a wasteful number, since it uses less digits than its factorization.

164887428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852 (or 850 counting only the distinct ones).

The product of its digits is 688128, while the sum is 48.

The square root of 164887428 is about 12840.8499718671. The cubic root of 164887428 is about 548.3558923922.

The spelling of 164887428 in words is "one hundred sixty-four million, eight hundred eighty-seven thousand, four hundred twenty-eight".