40478372 has 24 divisors (see below), whose sum is σ = 77925792. Its totient is φ = 18396840.

The previous prime is 40478369. The next prime is 40478387. The reversal of 40478372 is 27387404.

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, 1523 + ... + 9125.

It is an arithmetic number, because the mean of its divisors is an integer number (3246908).

Almost surely, 2^40478372 is an apocalyptic number.

It is an amenable number.

40478372 is a deficient number, since it is larger than the sum of its proper divisors (37447420).

40478372 is a wasteful number, since it uses less digits than its factorization.

40478372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7640 (or 7616 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 40478372 is about 6362.2615475945. The cubic root of 40478372 is about 343.3531313140.

The spelling of 40478372 in words is "forty million, four hundred seventy-eight thousand, three hundred seventy-two".