40678656 has 36 divisors (see below), whose sum is σ = 108266592. Its totient is φ = 13559296.

The previous prime is 40678633. The next prime is 40678667. The reversal of 40678656 is 65687604.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25716 + ... + 27251.

Almost surely, 2^40678656 is an apocalyptic number.

It is an amenable number.

40678656 is an abundant number, since it is smaller than the sum of its proper divisors (67587936).

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

40678656 is an equidigital number, since it uses as much as digits as its factorization.

40678656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52986 (or 52972 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 40678656 is about 6377.9821260333. The cubic root of 40678656 is about 343.9184952027.

The spelling of 40678656 in words is "forty million, six hundred seventy-eight thousand, six hundred fifty-six".