100304220 has 48 divisors (see below), whose sum is σ = 289916928. Its totient is φ = 25884480.

The previous prime is 100304213. The next prime is 100304279. The reversal of 100304220 is 22403001.

100304220 = 1564² + 1565² + ... + 1603².

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 100304196 and 100304205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25104 + ... + 28823.

It is an arithmetic number, because the mean of its divisors is an integer number (6039936).

Almost surely, 2^100304220 is an apocalyptic number.

100304220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100304220 is an abundant number, since it is smaller than the sum of its proper divisors (189612708).

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

100304220 is a wasteful number, since it uses less digits than its factorization.

100304220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53970 (or 53968 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 100304220 is about 10015.1994488378. The cubic root of 100304220 is about 464.6290949089.

Adding to 100304220 its reverse (22403001), we get a palindrome (122707221).

The spelling of 100304220 in words is "one hundred million, three hundred four thousand, two hundred twenty".