40492656 has 80 divisors (see below), whose sum is σ = 118048000. Its totient is φ = 13286592.

The previous prime is 40492643. The next prime is 40492681. The reversal of 40492656 is 65629404.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 40492656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28245 + ... + 29643.

It is an arithmetic number, because the mean of its divisors is an integer number (1475600).

Almost surely, 2^40492656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40492656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59024000).

40492656 is an abundant number, since it is smaller than the sum of its proper divisors (77555344).

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

40492656 is a wasteful number, since it uses less digits than its factorization.

40492656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483 (or 1471 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 40492656 is about 6363.3840053858. The cubic root of 40492656 is about 343.3935140263.

The spelling of 40492656 in words is "forty million, four hundred ninety-two thousand, six hundred fifty-six".