40256412 has 24 divisors (see below), whose sum is σ = 107350656. Its totient is φ = 11501808.

The previous prime is 40256387. The next prime is 40256413. The reversal of 40256412 is 21465204.

It is a super-2 number, since 2×40256412² = 3241157414227488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40256413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239538 + ... + 239705.

It is an arithmetic number, because the mean of its divisors is an integer number (4472944).

Almost surely, 2^40256412 is an apocalyptic number.

40256412 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

40256412 is an abundant number, since it is smaller than the sum of its proper divisors (67094244).

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

40256412 is a wasteful number, since it uses less digits than its factorization.

40256412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479257 (or 479255 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 40256412 is about 6344.7940864933. The cubic root of 40256412 is about 342.7243973213.

The spelling of 40256412 in words is "forty million, two hundred fifty-six thousand, four hundred twelve".