402222018400 has 36 divisors (see below), whose sum is σ = 981924504372. Its totient is φ = 160888807040.

The previous prime is 402222018383. The next prime is 402222018413. The reversal of 402222018400 is 4810222204.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 251387962 + ... + 251389561.

It is an arithmetic number, because the mean of its divisors is an integer number (27275680677).

Almost surely, 2^402222018400 is an apocalyptic number.

402222018400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402222018400 is an abundant number, since it is smaller than the sum of its proper divisors (579702485972).

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

402222018400 is a wasteful number, since it uses less digits than its factorization.

402222018400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502777543 (or 502777530 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

The spelling of 402222018400 in words is "four hundred two billion, two hundred twenty-two million, eighteen thousand, four hundred".