401430220 has 24 divisors (see below), whose sum is σ = 843749424. Its totient is φ = 160430016.

The previous prime is 401430199. The next prime is 401430223. The reversal of 401430220 is 22034104.

It is a super-2 number, since 2×401430220² = 322292443058496800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401430194 and 401430203.

It is not an unprimeable number, because it can be changed into a prime (401430223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15987 + ... + 32533.

It is an arithmetic number, because the mean of its divisors is an integer number (35156226).

Almost surely, 2^401430220 is an apocalyptic number.

It is an amenable number.

401430220 is an abundant number, since it is smaller than the sum of its proper divisors (442319204).

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

401430220 is a wasteful number, since it uses less digits than its factorization.

401430220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17769 (or 17767 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 401430220 is about 20035.7235956179. The cubic root of 401430220 is about 737.6834177524.

Adding to 401430220 its reverse (22034104), we get a palindrome (423464324).

The spelling of 401430220 in words is "four hundred one million, four hundred thirty thousand, two hundred twenty".