40130256 has 20 divisors (see below), whose sum is σ = 103669952. Its totient is φ = 13376736.

The previous prime is 40130231. The next prime is 40130263. The reversal of 40130256 is 65203104.

It is a happy number.

It is a super-2 number, since 2×40130256² = 3220874893251072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417976 + ... + 418071.

Almost surely, 2^40130256 is an apocalyptic number.

It is an amenable number.

40130256 is an abundant number, since it is smaller than the sum of its proper divisors (63539696).

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

40130256 is a wasteful number, since it uses less digits than its factorization.

40130256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836058 (or 836052 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 40130256 is about 6334.8445916218. The cubic root of 40130256 is about 342.3660114892.

The spelling of 40130256 in words is "forty million, one hundred thirty thousand, two hundred fifty-six".