40378432 has 28 divisors (see below), whose sum is σ = 83612736. Its totient is φ = 19310720.

The previous prime is 40378427. The next prime is 40378447. The reversal of 40378432 is 23487304.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 40378394 and 40378403.

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, 12244 + ... + 15187.

Almost surely, 2^40378432 is an apocalyptic number.

It is an amenable number.

40378432 is an abundant number, since it is smaller than the sum of its proper divisors (43234304).

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

40378432 is a wasteful number, since it uses less digits than its factorization.

40378432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27466 (or 27456 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 40378432 is about 6354.4025682986. The cubic root of 40378432 is about 343.0703219211.

The spelling of 40378432 in words is "forty million, three hundred seventy-eight thousand, four hundred thirty-two".