16021164 has 24 divisors (see below), whose sum is σ = 37896880. Its totient is φ = 5266944.

The previous prime is 16021163. The next prime is 16021193. The reversal of 16021164 is 46112061.

16021164 = 432² + 433² + ... + 504².

16021164 is a modest number, since divided by 21164 gives 16 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 16021164.

It is not an unprimeable number, because it can be changed into a prime (16021163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8269 + ... + 10020.

Almost surely, 2^16021164 is an apocalyptic number.

It is an amenable number.

16021164 is an abundant number, since it is smaller than the sum of its proper divisors (21875716).

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

16021164 is a wasteful number, since it uses less digits than its factorization.

16021164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18369 (or 18367 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 16021164 is about 4002.6446257443. The cubic root of 16021164 is about 252.0952650652.

The spelling of 16021164 in words is "sixteen million, twenty-one thousand, one hundred sixty-four".