40724631 has 6 divisors (see below), whose sum is σ = 58824480. Its totient is φ = 27149748.

The previous prime is 40724623. The next prime is 40724633. The reversal of 40724631 is 13642704.

40724631 is a `hidden beast` number, since 4 + 0 + 7 + 24 + 631 = 666.

It is not a de Polignac number, because 40724631 - 2³ = 40724623 is a prime.

It is a super-2 number, since 2×40724631² = 3316991140172322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40724595 and 40724604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40724633) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2262471 + ... + 2262488.

It is an arithmetic number, because the mean of its divisors is an integer number (9804080).

Almost surely, 2^40724631 is an apocalyptic number.

40724631 is a deficient number, since it is larger than the sum of its proper divisors (18099849).

40724631 is a wasteful number, since it uses less digits than its factorization.

40724631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4524965 (or 4524962 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 40724631 is about 6381.5853046089. The cubic root of 40724631 is about 344.0480119349.

The spelling of 40724631 in words is "forty million, seven hundred twenty-four thousand, six hundred thirty-one".