22030385 has 16 divisors (see below), whose sum is σ = 30146256. Its totient is φ = 15310848.

The previous prime is 22030381. The next prime is 22030391. The reversal of 22030385 is 58303022.

It can be written as a sum of positive squares in 8 ways, for example, as 1852321 + 20178064 = 1361^2 + 4492^2 .

It is a cyclic number.

It is not a de Polignac number, because 22030385 - 2² = 22030381 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22030385.

It is not an unprimeable number, because it can be changed into a prime (22030381) 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, 8864 + ... + 11073.

It is an arithmetic number, because the mean of its divisors is an integer number (1884141).

Almost surely, 2^22030385 is an apocalyptic number.

It is an amenable number.

22030385 is a deficient number, since it is larger than the sum of its proper divisors (8115871).

22030385 is a wasteful number, since it uses less digits than its factorization.

22030385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19972.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 22030385 is about 4693.6536940852. The cubic root of 22030385 is about 280.3328736693.

The spelling of 22030385 in words is "twenty-two million, thirty thousand, three hundred eighty-five".