40023256 has 48 divisors (see below), whose sum is σ = 92890800. Its totient is φ = 15829632.

The previous prime is 40023229. The next prime is 40023311. The reversal of 40023256 is 65232004.

It is a happy number.

It is a super-2 number, since 2×40023256² = 3203722041683072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7350 + ... + 11578.

It is an arithmetic number, because the mean of its divisors is an integer number (1935225).

Almost surely, 2^40023256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40023256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46445400).

40023256 is an abundant number, since it is smaller than the sum of its proper divisors (52867544).

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

40023256 is a wasteful number, since it uses less digits than its factorization.

40023256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4268 (or 4251 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 40023256 is about 6326.3936014131. The cubic root of 40023256 is about 342.0614551624.

The spelling of 40023256 in words is "forty million, twenty-three thousand, two hundred fifty-six".