40012256 has 24 divisors (see below), whose sum is σ = 78921864. Its totient is φ = 19968640.

The previous prime is 40012253. The next prime is 40012267. The reversal of 40012256 is 65221004.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40012253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25511 + ... + 27033.

It is an arithmetic number, because the mean of its divisors is an integer number (3288411).

Almost surely, 2^40012256 is an apocalyptic number.

It is an amenable number.

40012256 is a deficient number, since it is larger than the sum of its proper divisors (38909608).

40012256 is a wasteful number, since it uses less digits than its factorization.

40012256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2354 (or 2346 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 40012256 is about 6325.5241680038. The cubic root of 40012256 is about 342.0301148772.

The spelling of 40012256 in words is "forty million, twelve thousand, two hundred fifty-six".