22038861 has 16 divisors (see below), whose sum is σ = 32668160. Its totient is φ = 13124160.

The previous prime is 22038859. The next prime is 22038871. The reversal of 22038861 is 16883022.

It is not a de Polignac number, because 22038861 - 2¹ = 22038859 is a prime.

It is a super-2 number, since 2×22038861² = 971422788354642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22038871) 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, 7906 + ... + 10323.

It is an arithmetic number, because the mean of its divisors is an integer number (2041760).

Almost surely, 2^22038861 is an apocalyptic number.

It is an amenable number.

22038861 is a deficient number, since it is larger than the sum of its proper divisors (10629299).

22038861 is a wasteful number, since it uses less digits than its factorization.

22038861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18276.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 22038861 is about 4694.5565285765. The cubic root of 22038861 is about 280.3688209420.

The spelling of 22038861 in words is "twenty-two million, thirty-eight thousand, eight hundred sixty-one".