402200000020 has 96 divisors (see below), whose sum is σ = 1047011616000. Its totient is φ = 126373837824.

The previous prime is 402199999987. The next prime is 402200000047. The reversal of 402200000020 is 20000002204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 402199999952 and 402200000006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 541945 + ... + 1047904.

It is an arithmetic number, because the mean of its divisors is an integer number (10906371000).

Almost surely, 2^402200000020 is an apocalyptic number.

It is an amenable number.

402200000020 is an abundant number, since it is smaller than the sum of its proper divisors (644811615980).

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

402200000020 is a wasteful number, since it uses less digits than its factorization.

402200000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590017 (or 1590015 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

Adding to 402200000020 its reverse (20000002204), we get a palindrome (422200002224).

The spelling of 402200000020 in words is "four hundred two billion, two hundred million, twenty", and thus it is an aban number.