40166788 has 6 divisors (see below), whose sum is σ = 70291886. Its totient is φ = 20083392.

The previous prime is 40166761. The next prime is 40166803. The reversal of 40166788 is 88766104.

It can be written as a sum of positive squares in only one way, i.e., 39715204 + 451584 = 6302^2 + 672^2 .

It is a super-2 number, since 2×40166788² = 3226741716473888, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40166788.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5020845 + ... + 5020852.

Almost surely, 2^40166788 is an apocalyptic number.

It is an amenable number.

40166788 is a deficient number, since it is larger than the sum of its proper divisors (30125098).

40166788 is a wasteful number, since it uses less digits than its factorization.

40166788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10041701 (or 10041699 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 40166788 is about 6337.7273529239. The cubic root of 40166788 is about 342.4698693014.

The spelling of 40166788 in words is "forty million, one hundred sixty-six thousand, seven hundred eighty-eight".