16520364 has 36 divisors (see below), whose sum is σ = 47726224. Its totient is φ = 4720032.

The previous prime is 16520363. The next prime is 16520369. The reversal of 16520364 is 46302561.

16520364 is a `hidden beast` number, since 1 + 652 + 0 + 3 + 6 + 4 = 666.

16520364 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×16520364³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (16520363) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32527 + ... + 33030.

Almost surely, 2^16520364 is an apocalyptic number.

16520364 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16520364 is an abundant number, since it is smaller than the sum of its proper divisors (31205860).

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

16520364 is a wasteful number, since it uses less digits than its factorization.

16520364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65574 (or 65569 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 16520364 is about 4064.5250645063. The cubic root of 16520364 is about 254.6868589869.

The spelling of 16520364 in words is "sixteen million, five hundred twenty thousand, three hundred sixty-four".