40255020 has 72 divisors (see below), whose sum is σ = 131507376. Its totient is φ = 9908352.

The previous prime is 40254979. The next prime is 40255021. The reversal of 40255020 is 2055204.

40255020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 40254984 and 40255002.

It is not an unprimeable number, because it can be changed into a prime (40255021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6262 + ... + 10941.

Almost surely, 2^40255020 is an apocalyptic number.

It is an amenable number.

40255020 is an abundant number, since it is smaller than the sum of its proper divisors (91252356).

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

40255020 is a wasteful number, since it uses less digits than its factorization.

40255020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17231 (or 17226 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 40255020 is about 6344.6843893136. The cubic root of 40255020 is about 342.7204469952.

It can be divided in two parts, 4025 and 5020, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 40255020 in words is "forty million, two hundred fifty-five thousand, twenty".