40397232 has 40 divisors (see below), whose sum is σ = 107961840. Its totient is φ = 13000960.

The previous prime is 40397221. The next prime is 40397243. The reversal of 40397232 is 23279304.

It is an interprime number because it is at equal distance from previous prime (40397221) and next prime (40397243).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 40397232.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13119 + ... + 15902.

It is an arithmetic number, because the mean of its divisors is an integer number (2699046).

Almost surely, 2^40397232 is an apocalyptic number.

It is an amenable number.

40397232 is an abundant number, since it is smaller than the sum of its proper divisors (67564608).

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

40397232 is a wasteful number, since it uses less digits than its factorization.

40397232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29061 (or 29055 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 40397232 is about 6355.8816854942. The cubic root of 40397232 is about 343.1235576132.

The spelling of 40397232 in words is "forty million, three hundred ninety-seven thousand, two hundred thirty-two".