40137656 has 16 divisors (see below), whose sum is σ = 81047400. Its totient is φ = 18525024.

The previous prime is 40137613. The next prime is 40137667. The reversal of 40137656 is 65673104.

40137656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40137656² = 3222062858348672, which contains 22 as substring.

It is a congruent number.

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, 192866 + ... + 193073.

Almost surely, 2^40137656 is an apocalyptic number.

It is an amenable number.

40137656 is an abundant number, since it is smaller than the sum of its proper divisors (40909744).

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

40137656 is a wasteful number, since it uses less digits than its factorization.

40137656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385958 (or 385954 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 40137656 is about 6335.4286358541. The cubic root of 40137656 is about 342.3870542388.

The spelling of 40137656 in words is "forty million, one hundred thirty-seven thousand, six hundred fifty-six".