40915728 has 60 divisors (see below), whose sum is σ = 130868608. Its totient is φ = 11689920.

The previous prime is 40915687. The next prime is 40915739. The reversal of 40915728 is 82751904.

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

It is a junction number, because it is equal to n+sod(n) for n = 40915692 and 40915701.

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, 19288 + ... + 21303.

Almost surely, 2^40915728 is an apocalyptic number.

40915728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

40915728 is an abundant number, since it is smaller than the sum of its proper divisors (89952880).

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

40915728 is a wasteful number, since it uses less digits than its factorization.

40915728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40612 (or 40603 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 40915728 is about 6396.5403148890. The cubic root of 40915728 is about 344.5853114497.

The spelling of 40915728 in words is "forty million, nine hundred fifteen thousand, seven hundred twenty-eight".