40045432 has 32 divisors (see below), whose sum is σ = 86169600. Its totient is φ = 17090784.

The previous prime is 40045409. The next prime is 40045441. The reversal of 40045432 is 23454004.

It is a happy number.

It is a congruent number.

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, 13369 + ... + 16087.

It is an arithmetic number, because the mean of its divisors is an integer number (2692800).

Almost surely, 2^40045432 is an apocalyptic number.

It is an amenable number.

40045432 is an abundant number, since it is smaller than the sum of its proper divisors (46124168).

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

40045432 is a wasteful number, since it uses less digits than its factorization.

40045432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2995 (or 2991 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 40045432 is about 6328.1460160145. The cubic root of 40045432 is about 342.1246197240.

Adding to 40045432 its reverse (23454004), we get a palindrome (63499436).

The spelling of 40045432 in words is "forty million, forty-five thousand, four hundred thirty-two".