22127890 has 16 divisors (see below), whose sum is σ = 39899160. Its totient is φ = 8835840.

The previous prime is 22127881. The next prime is 22127927. The reversal of 22127890 is 9872122.

It can be written as a sum of positive squares in 4 ways, for example, as 5489649 + 16638241 = 2343^2 + 4079^2 .

It is a super-3 number, since 3×22127890³ (a number of 23 digits) contains 333 as substring.

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, 5530 + ... + 8650.

Almost surely, 2^22127890 is an apocalyptic number.

22127890 is a deficient number, since it is larger than the sum of its proper divisors (17771270).

22127890 is a wasteful number, since it uses less digits than its factorization.

22127890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3837.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 22127890 is about 4704.0291240595. The cubic root of 22127890 is about 280.7458431472.

The spelling of 22127890 in words is "twenty-two million, one hundred twenty-seven thousand, eight hundred ninety".