22061889 has 10 divisors (see below), whose sum is σ = 32956770. Its totient is φ = 14707872.

The previous prime is 22061873. The next prime is 22061891. The reversal of 22061889 is 98816022.

It can be written as a sum of positive squares in only one way, i.e., 19289664 + 2772225 = 4392^2 + 1665^2 .

It is not a de Polignac number, because 22061889 - 2⁴ = 22061873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22061989) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 136104 + ... + 136265.

It is an arithmetic number, because the mean of its divisors is an integer number (3295677).

Almost surely, 2^22061889 is an apocalyptic number.

It is an amenable number.

22061889 is a deficient number, since it is larger than the sum of its proper divisors (10894881).

22061889 is an equidigital number, since it uses as much as digits as its factorization.

22061889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272381 (or 272372 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 22061889 is about 4697.0085160664. The cubic root of 22061889 is about 280.4664376899.

It can be divided in two parts, 2206 and 1889, that added together give a triangular number (4095 = T₉₀).

The spelling of 22061889 in words is "twenty-two million, sixty-one thousand, eight hundred eighty-nine".