40032113 has 16 divisors (see below), whose sum is σ = 45964800. Its totient is φ = 34531200.

The previous prime is 40032101. The next prime is 40032137. The reversal of 40032113 is 31123004.

It is not a de Polignac number, because 40032113 - 2⁶ = 40032049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40032193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15488 + ... + 17886.

It is an arithmetic number, because the mean of its divisors is an integer number (2872800).

Almost surely, 2^40032113 is an apocalyptic number.

It is an amenable number.

40032113 is a deficient number, since it is larger than the sum of its proper divisors (5932687).

40032113 is a wasteful number, since it uses less digits than its factorization.

40032113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2488.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 40032113 is about 6327.0935665596. The cubic root of 40032113 is about 342.0866856172.

Adding to 40032113 its reverse (31123004), we get a palindrome (71155117).

It can be divided in two parts, 4003 and 2113, that added together give a palindrome (6116).

The spelling of 40032113 in words is "forty million, thirty-two thousand, one hundred thirteen".