22031889 has 16 divisors (see below), whose sum is σ = 32218560. Its totient is φ = 13280960.

The previous prime is 22031873. The next prime is 22031899. The reversal of 22031889 is 98813022.

It is not a de Polignac number, because 22031889 - 2⁴ = 22031873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (22031899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4807 + ... + 8195.

It is an arithmetic number, because the mean of its divisors is an integer number (2013660).

Almost surely, 2^22031889 is an apocalyptic number.

It is an amenable number.

22031889 is a deficient number, since it is larger than the sum of its proper divisors (10186671).

22031889 is a wasteful number, since it uses less digits than its factorization.

22031889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3600.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 22031889 is about 4693.8139076874. The cubic root of 22031889 is about 280.3392529049.

The spelling of 22031889 in words is "twenty-two million, thirty-one thousand, eight hundred eighty-nine".