16400164 has 24 divisors (see below), whose sum is σ = 32076576. Its totient is φ = 7272000.

The previous prime is 16400143. The next prime is 16400183. The reversal of 16400164 is 46100461.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2742 + ... + 6349.

It is an arithmetic number, because the mean of its divisors is an integer number (1336524).

Almost surely, 2^16400164 is an apocalyptic number.

It is an amenable number.

16400164 is a deficient number, since it is larger than the sum of its proper divisors (15676412).

16400164 is a wasteful number, since it uses less digits than its factorization.

16400164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9147 (or 9145 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 16400164 is about 4049.7115946694. The cubic root of 16400164 is about 254.0676654411.

It can be divided in two parts, 16400 and 164, that multiplied together give a square (2689600 = 1640²).

The spelling of 16400164 in words is "sixteen million, four hundred thousand, one hundred sixty-four".