22270998 has 8 divisors (see below), whose sum is σ = 44542008. Its totient is φ = 7423664.

The previous prime is 22270993. The next prime is 22270999. The reversal of 22270998 is 89907222.

It is a sphenic number, since it is the product of 3 distinct primes.

22270998 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22270991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1855911 + ... + 1855922.

It is an arithmetic number, because the mean of its divisors is an integer number (5567751).

Almost surely, 2^22270998 is an apocalyptic number.

22270998 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22270998 is a wasteful number, since it uses less digits than its factorization.

22270998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3711838.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 22270998 is about 4719.2158246895. The cubic root of 22270998 is about 281.3497668774.

The spelling of 22270998 in words is "twenty-two million, two hundred seventy thousand, nine hundred ninety-eight".