40255620 has 48 divisors (see below), whose sum is σ = 114851520. Its totient is φ = 10531456.

The previous prime is 40255619. The next prime is 40255637. The reversal of 40255620 is 2655204.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3150 + ... + 9509.

It is an arithmetic number, because the mean of its divisors is an integer number (2392740).

Almost surely, 2^40255620 is an apocalyptic number.

It is an amenable number.

40255620 is an abundant number, since it is smaller than the sum of its proper divisors (74595900).

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

40255620 is a wasteful number, since it uses less digits than its factorization.

40255620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12724 (or 12722 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 40255620 is about 6344.7316728133. The cubic root of 40255620 is about 342.7221497331.

The spelling of 40255620 in words is "forty million, two hundred fifty-five thousand, six hundred twenty".