402334220 has 24 divisors (see below), whose sum is σ = 849156000. Its totient is φ = 160123392.

The previous prime is 402334133. The next prime is 402334243. The reversal of 402334220 is 22433204.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 402334192 and 402334201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46565 + ... + 54524.

It is an arithmetic number, because the mean of its divisors is an integer number (35381500).

Almost surely, 2^402334220 is an apocalyptic number.

It is an amenable number.

402334220 is an abundant number, since it is smaller than the sum of its proper divisors (446821780).

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

402334220 is a wasteful number, since it uses less digits than its factorization.

402334220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101297 (or 101295 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 402334220 is about 20058.2706133904. The cubic root of 402334220 is about 738.2367441833.

Adding to 402334220 its reverse (22433204), we get a palindrome (424767424).

The spelling of 402334220 in words is "four hundred two million, three hundred thirty-four thousand, two hundred twenty".