40243256 has 16 divisors (see below), whose sum is σ = 75524400. Its totient is φ = 20103424.

The previous prime is 40243253. The next prime is 40243279. The reversal of 40243256 is 65234204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40243253) 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, 13781 + ... + 16443.

It is an arithmetic number, because the mean of its divisors is an integer number (4720275).

Almost surely, 2^40243256 is an apocalyptic number.

It is an amenable number.

40243256 is a deficient number, since it is larger than the sum of its proper divisors (35281144).

40243256 is a wasteful number, since it uses less digits than its factorization.

40243256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4558 (or 4554 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 40243256 is about 6343.7572463013. The cubic root of 40243256 is about 342.6870585620.

The spelling of 40243256 in words is "forty million, two hundred forty-three thousand, two hundred fifty-six".