402200220 has 24 divisors (see below), whose sum is σ = 1126160784. Its totient is φ = 107253376.

The previous prime is 402200207. The next prime is 402200243. The reversal of 402200220 is 22002204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 402200196 and 402200205.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 3351609 + ... + 3351728.

It is an arithmetic number, because the mean of its divisors is an integer number (46923366).

Almost surely, 2^402200220 is an apocalyptic number.

It is an amenable number.

402200220 is an abundant number, since it is smaller than the sum of its proper divisors (723960564).

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

402200220 is a wasteful number, since it uses less digits than its factorization.

402200220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6703349 (or 6703347 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 402200220 is about 20054.9300671930. The cubic root of 402200220 is about 738.1547769172.

Adding to 402200220 its reverse (22002204), we get a palindrome (424202424).

The spelling of 402200220 in words is "four hundred two million, two hundred thousand, two hundred twenty".