400602882020 has 36 divisors (see below), whose sum is σ = 924697401852. Its totient is φ = 145673774400.

The previous prime is 400602882019. The next prime is 400602882037. The reversal of 400602882020 is 20288206004.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 110532311296 + 290070570724 = 332464^2 + 538582^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82766771 + ... + 82771610.

Almost surely, 2^400602882020 is an apocalyptic number.

It is an amenable number.

400602882020 is an abundant number, since it is smaller than the sum of its proper divisors (524094519832).

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

400602882020 is a wasteful number, since it uses less digits than its factorization.

400602882020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165538412 (or 165538399 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The spelling of 400602882020 in words is "four hundred billion, six hundred two million, eight hundred eighty-two thousand, twenty".