40656474 has 24 divisors (see below), whose sum is σ = 89298612. Its totient is φ = 13366080.

The previous prime is 40656443. The next prime is 40656491. The reversal of 40656474 is 47465604.

40656474 is a `hidden beast` number, since 4 + 0 + 6 + 5 + 647 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 40411449 + 245025 = 6357^2 + 495^2 .

It is a super-2 number, since 2×40656474² = 3305897756225352, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14157 + ... + 16784.

Almost surely, 2^40656474 is an apocalyptic number.

40656474 is an abundant number, since it is smaller than the sum of its proper divisors (48642138).

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

40656474 is a wasteful number, since it uses less digits than its factorization.

40656474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31022 (or 31019 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The square root of 40656474 is about 6376.2429376554. The cubic root of 40656474 is about 343.8559711185.

The spelling of 40656474 in words is "forty million, six hundred fifty-six thousand, four hundred seventy-four".