220827400 has 24 divisors (see below), whose sum is σ = 513424170. Its totient is φ = 88330880.

The previous prime is 220827389. The next prime is 220827401. The reversal of 220827400 is 4728022.

It can be written as a sum of positive squares in 3 ways, for example, as 132204004 + 88623396 = 11498^2 + 9414^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (220827401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 551869 + ... + 552268.

Almost surely, 2^220827400 is an apocalyptic number.

220827400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220827400 is an abundant number, since it is smaller than the sum of its proper divisors (292596770).

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

220827400 is a wasteful number, since it uses less digits than its factorization.

220827400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104153 (or 1104144 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 220827400 is about 14860.2624472114. The cubic root of 220827400 is about 604.4369234555.

The spelling of 220827400 in words is "two hundred twenty million, eight hundred twenty-seven thousand, four hundred".