400220430 has 16 divisors (see below), whose sum is σ = 960529104. Its totient is φ = 106725440.

The previous prime is 400220419. The next prime is 400220459. The reversal of 400220430 is 34022004.

It is a happy number.

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

It is a congruent number.

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, 6670311 + ... + 6670370.

It is an arithmetic number, because the mean of its divisors is an integer number (60033069).

Almost surely, 2^400220430 is an apocalyptic number.

400220430 is an abundant number, since it is smaller than the sum of its proper divisors (560308674).

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

400220430 is a wasteful number, since it uses less digits than its factorization.

400220430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13340691.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 400220430 is about 20005.5099910000. The cubic root of 400220430 is about 736.9416200511.

Adding to 400220430 its reverse (34022004), we get a palindrome (434242434).

The spelling of 400220430 in words is "four hundred million, two hundred twenty thousand, four hundred thirty".