400422210 has 16 divisors (see below), whose sum is σ = 961013376. Its totient is φ = 106779248.

The previous prime is 400422181. The next prime is 400422247. The reversal of 400422210 is 12224004.

It is a super-2 number, since 2×400422210² = 320675892522568200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 400422210.

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, 6673674 + ... + 6673733.

It is an arithmetic number, because the mean of its divisors is an integer number (60063336).

Almost surely, 2^400422210 is an apocalyptic number.

400422210 is an abundant number, since it is smaller than the sum of its proper divisors (560591166).

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

400422210 is a wasteful number, since it uses less digits than its factorization.

400422210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13347417.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 400422210 is about 20010.5524661365. The cubic root of 400422210 is about 737.0654477269.

Adding to 400422210 its reverse (12224004), we get a palindrome (412646214).

The spelling of 400422210 in words is "four hundred million, four hundred twenty-two thousand, two hundred ten".