40815472 has 10 divisors (see below), whose sum is σ = 79080008. Its totient is φ = 20407728.

The previous prime is 40815469. The next prime is 40815479. The reversal of 40815472 is 27451804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40815479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275468 + ... + 1275499.

Almost surely, 2^40815472 is an apocalyptic number.

It is an amenable number.

40815472 is a deficient number, since it is larger than the sum of its proper divisors (38264536).

40815472 is a wasteful number, since it uses less digits than its factorization.

40815472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2550975 (or 2550969 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 40815472 is about 6388.6987720505. The cubic root of 40815472 is about 344.3036349255.

The spelling of 40815472 in words is "forty million, eight hundred fifteen thousand, four hundred seventy-two".