40166432 has 12 divisors (see below), whose sum is σ = 79077726. Its totient is φ = 20083200.

The previous prime is 40166431. The next prime is 40166449. The reversal of 40166432 is 23466104.

It can be written as a sum of positive squares in only one way, i.e., 39891856 + 274576 = 6316^2 + 524^2 .

It is a super-2 number, since 2×40166432² = 3226684519221248, which contains 22 as substring.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (40166431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627569 + ... + 627632.

Almost surely, 2^40166432 is an apocalyptic number.

It is an amenable number.

40166432 is a deficient number, since it is larger than the sum of its proper divisors (38911294).

40166432 is a wasteful number, since it uses less digits than its factorization.

40166432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1255211 (or 1255203 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 40166432 is about 6337.6992670842. The cubic root of 40166432 is about 342.4688575232.

The spelling of 40166432 in words is "forty million, one hundred sixty-six thousand, four hundred thirty-two".