40372164 has 36 divisors (see below), whose sum is σ = 116631424. Its totient is φ = 11534832.

The previous prime is 40372151. The next prime is 40372181. The reversal of 40372164 is 46127304.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79852 + ... + 80355.

Almost surely, 2^40372164 is an apocalyptic number.

It is an amenable number.

40372164 is an abundant number, since it is smaller than the sum of its proper divisors (76259260).

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

40372164 is a wasteful number, since it uses less digits than its factorization.

40372164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160224 (or 160219 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 40372164 is about 6353.9093477953. The cubic root of 40372164 is about 343.0525692418.

Adding to 40372164 its reverse (46127304), we get a palindrome (86499468).

The spelling of 40372164 in words is "forty million, three hundred seventy-two thousand, one hundred sixty-four".