40172196 has 12 divisors (see below), whose sum is σ = 93735152. Its totient is φ = 13390728.

The previous prime is 40172189. The next prime is 40172201. The reversal of 40172196 is 69127104.

It is a happy number.

40172196 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 (12).

It is a super-2 number, since 2×40172196² = 3227610662924832, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1673830 + ... + 1673853.

Almost surely, 2^40172196 is an apocalyptic number.

It is an amenable number.

40172196 is an abundant number, since it is smaller than the sum of its proper divisors (53562956).

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

40172196 is a wasteful number, since it uses less digits than its factorization.

40172196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3347690 (or 3347688 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 40172196 is about 6338.1539899248. The cubic root of 40172196 is about 342.4852384993.

Subtracting from 40172196 its sum of digits (30), we obtain a triangular number (40172166 = T₈₉₆₃).

The spelling of 40172196 in words is "forty million, one hundred seventy-two thousand, one hundred ninety-six".