220398900 has 36 divisors (see below), whose sum is σ = 637688352. Its totient is φ = 58772960.

The previous prime is 220398883. The next prime is 220398923. The reversal of 220398900 is 9893022.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 367032 + ... + 367631.

Almost surely, 2^220398900 is an apocalyptic number.

220398900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220398900 is an abundant number, since it is smaller than the sum of its proper divisors (417289452).

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

220398900 is a wasteful number, since it uses less digits than its factorization.

220398900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734680 (or 734673 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 220398900 is about 14845.8378005419. The cubic root of 220398900 is about 604.0457145640.

The spelling of 220398900 in words is "two hundred twenty million, three hundred ninety-eight thousand, nine hundred".