402870403220 has 12 divisors (see below), whose sum is σ = 846027846804. Its totient is φ = 161148161280.

The previous prime is 402870403211. The next prime is 402870403307. The reversal of 402870403220 is 22304078204.

It can be written as a sum of positive squares in 2 ways, for example, as 185352636676 + 217517766544 = 430526^2 + 466388^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10071760061 + ... + 10071760100.

It is an arithmetic number, because the mean of its divisors is an integer number (70502320567).

Almost surely, 2^402870403220 is an apocalyptic number.

It is an amenable number.

402870403220 is an abundant number, since it is smaller than the sum of its proper divisors (443157443584).

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

402870403220 is a wasteful number, since it uses less digits than its factorization.

402870403220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20143520170 (or 20143520168 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 32.

The spelling of 402870403220 in words is "four hundred two billion, eight hundred seventy million, four hundred three thousand, two hundred twenty".