40304388 has 24 divisors (see below), whose sum is σ = 94879008. Its totient is φ = 13315456.

The previous prime is 40304323. The next prime is 40304401. The reversal of 40304388 is 88340304.

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, 13506 + ... + 16217.

It is an arithmetic number, because the mean of its divisors is an integer number (3953292).

Almost surely, 2^40304388 is an apocalyptic number.

It is an amenable number.

40304388 is an abundant number, since it is smaller than the sum of its proper divisors (54574620).

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

40304388 is a wasteful number, since it uses less digits than its factorization.

40304388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29843 (or 29841 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 40304388 is about 6348.5736980837. The cubic root of 40304388 is about 342.8604917332.

The spelling of 40304388 in words is "forty million, three hundred four thousand, three hundred eighty-eight".