400250310020 has 48 divisors (see below), whose sum is σ = 925839427968. Its totient is φ = 144132495360.

The previous prime is 400250310017. The next prime is 400250310043. The reversal of 400250310020 is 20013052004.

It is a super-2 number, since 2×400250310020² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8808989 + ... + 8854308.

It is an arithmetic number, because the mean of its divisors is an integer number (19288321416).

Almost surely, 2^400250310020 is an apocalyptic number.

It is an amenable number.

400250310020 is an abundant number, since it is smaller than the sum of its proper divisors (525589117948).

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

400250310020 is a wasteful number, since it uses less digits than its factorization.

400250310020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17663420 (or 17663418 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

Adding to 400250310020 its reverse (20013052004), we get a palindrome (420263362024).

The spelling of 400250310020 in words is "four hundred billion, two hundred fifty million, three hundred ten thousand, twenty".