220115400 has 48 divisors (see below), whose sum is σ = 682359600. Its totient is φ = 58697280.

The previous prime is 220115383. The next prime is 220115443. The reversal of 220115400 is 4511022.

220115400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 220115400.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 182830 + ... + 184029.

It is an arithmetic number, because the mean of its divisors is an integer number (14215825).

Almost surely, 2^220115400 is an apocalyptic number.

220115400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220115400 is an abundant number, since it is smaller than the sum of its proper divisors (462244200).

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

220115400 is a wasteful number, since it uses less digits than its factorization.

220115400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366878 (or 366869 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 220115400 is about 14836.2865973936. The cubic root of 220115400 is about 603.7866079505.

Adding to 220115400 its reverse (4511022), we get a palindrome (224626422).

The spelling of 220115400 in words is "two hundred twenty million, one hundred fifteen thousand, four hundred".