402214220 has 48 divisors (see below), whose sum is σ = 896041440. Its totient is φ = 151133184.

The previous prime is 402214213. The next prime is 402214247. The reversal of 402214220 is 22412204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 15 ways as a sum of consecutive naturals, for example, 281147 + ... + 282573.

It is an arithmetic number, because the mean of its divisors is an integer number (18667530).

Almost surely, 2^402214220 is an apocalyptic number.

It is an amenable number.

402214220 is an abundant number, since it is smaller than the sum of its proper divisors (493827220).

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

402214220 is a wasteful number, since it uses less digits than its factorization.

402214220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2282 (or 2280 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 402214220 is about 20055.2791055123. The cubic root of 402214220 is about 738.1633415131.

Adding to 402214220 its reverse (22412204), we get a palindrome (424626424).

The spelling of 402214220 in words is "four hundred two million, two hundred fourteen thousand, two hundred twenty".