222998420 has 24 divisors (see below), whose sum is σ = 469217448. Its totient is φ = 89024000.

The previous prime is 222998417. The next prime is 222998431. The reversal of 222998420 is 24899222.

It can be written as a sum of positive squares in 4 ways, for example, as 749956 + 222248464 = 866^2 + 14908^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281 + ... + 21120.

It is an arithmetic number, because the mean of its divisors is an integer number (19550727).

Almost surely, 2^222998420 is an apocalyptic number.

222998420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222998420 is an abundant number, since it is smaller than the sum of its proper divisors (246219028).

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

222998420 is a wasteful number, since it uses less digits than its factorization.

222998420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21931 (or 21929 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 222998420 is about 14933.1316206615. The cubic root of 222998420 is about 606.4112672619.

The spelling of 222998420 in words is "two hundred twenty-two million, nine hundred ninety-eight thousand, four hundred twenty".