40393472 has 36 divisors (see below), whose sum is σ = 92151696. Its totient is φ = 17310720.

The previous prime is 40393427. The next prime is 40393481. The reversal of 40393472 is 27439304.

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 9479 + ... + 13062.

Almost surely, 2^40393472 is an apocalyptic number.

It is an amenable number.

40393472 is an abundant number, since it is smaller than the sum of its proper divisors (51758224).

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

40393472 is an equidigital number, since it uses as much as digits as its factorization.

40393472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22564 (or 22550 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 40393472 is about 6355.5858895935. The cubic root of 40393472 is about 343.1129117963.

The spelling of 40393472 in words is "forty million, three hundred ninety-three thousand, four hundred seventy-two".