22371890 has 8 divisors (see below), whose sum is σ = 40269420. Its totient is φ = 8948752.

The previous prime is 22371889. The next prime is 22371907. The reversal of 22371890 is 9817322.

It can be written as a sum of positive squares in 2 ways, for example, as 22250089 + 121801 = 4717^2 + 349^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1118585 + ... + 1118604.

Almost surely, 2^22371890 is an apocalyptic number.

22371890 is a deficient number, since it is larger than the sum of its proper divisors (17897530).

22371890 is a wasteful number, since it uses less digits than its factorization.

22371890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2237196.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 22371890 is about 4729.8932334673. The cubic root of 22371890 is about 281.7739835142.

The spelling of 22371890 in words is "twenty-two million, three hundred seventy-one thousand, eight hundred ninety".