40312538 has 8 divisors (see below), whose sum is σ = 69107232. Its totient is φ = 17276796.

The previous prime is 40312529. The next prime is 40312549. The reversal of 40312538 is 83521304.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1439720 + ... + 1439747.

It is an arithmetic number, because the mean of its divisors is an integer number (8638404).

Almost surely, 2^40312538 is an apocalyptic number.

40312538 is a deficient number, since it is larger than the sum of its proper divisors (28794694).

40312538 is a wasteful number, since it uses less digits than its factorization.

40312538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2879476.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 40312538 is about 6349.2155420965. The cubic root of 40312538 is about 342.8836002566.

The spelling of 40312538 in words is "forty million, three hundred twelve thousand, five hundred thirty-eight".