220398 has 16 divisors (see below), whose sum is σ = 446160. Its totient is φ = 72576.

The previous prime is 220391. The next prime is 220399. The reversal of 220398 is 893022.

It is a plaindrome in base 16.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 486 + ... + 822.

It is an arithmetic number, because the mean of its divisors is an integer number (27885).

2²²⁰³⁹⁸ is an apocalyptic number.

220398 is an abundant number, since it is smaller than the sum of its proper divisors (225762).

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

220398 is a wasteful number, since it uses less digits than its factorization.

220398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 220398 is about 469.4656536958. The cubic root of 220398 is about 60.4044892355.

The spelling of 220398 in words is "two hundred twenty thousand, three hundred ninety-eight".