40255240 has 32 divisors (see below), whose sum is σ = 91728000. Its totient is φ = 15897024.

The previous prime is 40255231. The next prime is 40255253. The reversal of 40255240 is 4255204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3210 + ... + 9529.

It is an arithmetic number, because the mean of its divisors is an integer number (2866500).

Almost surely, 2^40255240 is an apocalyptic number.

40255240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40255240 is an abundant number, since it is smaller than the sum of its proper divisors (51472760).

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

40255240 is a wasteful number, since it uses less digits than its factorization.

40255240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12829 (or 12825 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 40255240 is about 6344.7017266377. The cubic root of 40255240 is about 342.7210713344.

The spelling of 40255240 in words is "forty million, two hundred fifty-five thousand, two hundred forty".