22019745 has 32 divisors (see below), whose sum is σ = 38807424. Its totient is φ = 10572800.

The previous prime is 22019737. The next prime is 22019759. The reversal of 22019745 is 54791022.

It is not a de Polignac number, because 22019745 - 2³ = 22019737 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18055 + ... + 19235.

It is an arithmetic number, because the mean of its divisors is an integer number (1212732).

Almost surely, 2^22019745 is an apocalyptic number.

It is an amenable number.

22019745 is a deficient number, since it is larger than the sum of its proper divisors (16787679).

22019745 is a wasteful number, since it uses less digits than its factorization.

22019745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 22019745 is about 4692.5201118376. The cubic root of 22019745 is about 280.2877356762.

The spelling of 22019745 in words is "twenty-two million, nineteen thousand, seven hundred forty-five".