220200400 has 60 divisors (see below), whose sum is σ = 604615072. Its totient is φ = 75496320.

The previous prime is 220200397. The next prime is 220200401. The reversal of 220200400 is 4002022.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220200401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36522 + ... + 42121.

Almost surely, 2^220200400 is an apocalyptic number.

220200400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220200400 is an abundant number, since it is smaller than the sum of its proper divisors (384414672).

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

220200400 is a wasteful number, since it uses less digits than its factorization.

220200400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78668 (or 78657 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 220200400 is about 14839.1509191059. The cubic root of 220200400 is about 603.8643175775.

Adding to 220200400 its reverse (4002022), we get a palindrome (224202422).

The spelling of 220200400 in words is "two hundred twenty million, two hundred thousand, four hundred".