40278232 has 16 divisors (see below), whose sum is σ = 75769200. Its totient is φ = 20073120.

The previous prime is 40278211. The next prime is 40278241. The reversal of 40278232 is 23287204.

It is a self number, because there is not a number n which added to its sum of digits gives 40278232.

It is a congruent number.

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, 5607 + ... + 10582.

It is an arithmetic number, because the mean of its divisors is an integer number (4735575).

Almost surely, 2^40278232 is an apocalyptic number.

It is an amenable number.

40278232 is a deficient number, since it is larger than the sum of its proper divisors (35490968).

40278232 is a wasteful number, since it uses less digits than its factorization.

40278232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16506 (or 16502 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 40278232 is about 6346.5133734989. The cubic root of 40278232 is about 342.7863079193.

The spelling of 40278232 in words is "forty million, two hundred seventy-eight thousand, two hundred thirty-two".