22340520 has 48 divisors (see below), whose sum is σ = 72607860. Its totient is φ = 5957376.

The previous prime is 22340503. The next prime is 22340543. The reversal of 22340520 is 2504322.

It can be written as a sum of positive squares in 2 ways, for example, as 21958596 + 381924 = 4686^2 + 618^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22340493 and 22340502.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30669 + ... + 31388.

Almost surely, 2^22340520 is an apocalyptic number.

22340520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22340520 is an abundant number, since it is smaller than the sum of its proper divisors (50267340).

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

22340520 is a wasteful number, since it uses less digits than its factorization.

22340520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62074 (or 62067 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 22340520 is about 4726.5759276669. The cubic root of 22340520 is about 281.6422201783.

Adding to 22340520 its reverse (2504322), we get a palindrome (24844842).

The spelling of 22340520 in words is "twenty-two million, three hundred forty thousand, five hundred twenty".