40597816 has 16 divisors (see below), whose sum is σ = 86995440. Its totient is φ = 17399040.

The previous prime is 40597811. The next prime is 40597937. The reversal of 40597816 is 61879504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40597811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362425 + ... + 362536.

It is an arithmetic number, because the mean of its divisors is an integer number (5437215).

Almost surely, 2^40597816 is an apocalyptic number.

It is an amenable number.

40597816 is an abundant number, since it is smaller than the sum of its proper divisors (46397624).

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

40597816 is a wasteful number, since it uses less digits than its factorization.

40597816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724974 (or 724970 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 40597816 is about 6371.6415467288. The cubic root of 40597816 is about 343.6905229989.

The spelling of 40597816 in words is "forty million, five hundred ninety-seven thousand, eight hundred sixteen".