22041864 has 48 divisors (see below), whose sum is σ = 64291500. Its totient is φ = 6781824.

The previous prime is 22041863. The next prime is 22041917. The reversal of 22041864 is 46814022.

It can be written as a sum of positive squares in 2 ways, for example, as 15539364 + 6502500 = 3942^2 + 2550^2 .

It is not an unprimeable number, because it can be changed into a prime (22041863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10839 + ... + 12710.

Almost surely, 2^22041864 is an apocalyptic number.

22041864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22041864 is an abundant number, since it is smaller than the sum of its proper divisors (42249636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22041864 is a wasteful number, since it uses less digits than its factorization.

22041864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23574 (or 23567 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 22041864 is about 4694.8763561994. The cubic root of 22041864 is about 280.3815546511.

Adding to 22041864 its reverse (46814022), we get a palindrome (68855886).

The spelling of 22041864 in words is "twenty-two million, forty-one thousand, eight hundred sixty-four".