22087090 has 8 divisors (see below), whose sum is σ = 39756780. Its totient is φ = 8834832.

The previous prime is 22087073. The next prime is 22087103. The reversal of 22087090 is 9078022.

It can be written as a sum of positive squares in 2 ways, for example, as 22061809 + 25281 = 4697^2 + 159^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1104345 + ... + 1104364.

Almost surely, 2^22087090 is an apocalyptic number.

22087090 is a deficient number, since it is larger than the sum of its proper divisors (17669690).

22087090 is a wasteful number, since it uses less digits than its factorization.

22087090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2208716.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 22087090 is about 4699.6904153359. The cubic root of 22087090 is about 280.5731880708.

The spelling of 22087090 in words is "twenty-two million, eighty-seven thousand, ninety".