40815436 has 24 divisors (see below), whose sum is σ = 75872160. Its totient is φ = 19145472.

The previous prime is 40815427. The next prime is 40815449. The reversal of 40815436 is 63451804.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 40815398 and 40815407.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25681 + ... + 27223.

It is an arithmetic number, because the mean of its divisors is an integer number (3161340).

Almost surely, 2^40815436 is an apocalyptic number.

It is an amenable number.

40815436 is a deficient number, since it is larger than the sum of its proper divisors (35056724).

40815436 is a wasteful number, since it uses less digits than its factorization.

40815436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1953 (or 1951 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 40815436 is about 6388.6959545748. The cubic root of 40815436 is about 344.3035336981.

The spelling of 40815436 in words is "forty million, eight hundred fifteen thousand, four hundred thirty-six".