22820513 has 8 divisors (see below), whose sum is σ = 23072808. Its totient is φ = 22569984.

The previous prime is 22820507. The next prime is 22820519. The reversal of 22820513 is 31502822.

It is an interprime number because it is at equal distance from previous prime (22820507) and next prime (22820519).

It can be written as a sum of positive squares in 4 ways, for example, as 784 + 22819729 = 28^2 + 4777^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22820513 - 2⁶ = 22820449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22820519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60995 + ... + 61367.

It is an arithmetic number, because the mean of its divisors is an integer number (2884101).

Almost surely, 2^22820513 is an apocalyptic number.

It is an amenable number.

22820513 is a deficient number, since it is larger than the sum of its proper divisors (252295).

22820513 is a wasteful number, since it uses less digits than its factorization.

22820513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 22820513 is about 4777.0820591654. The cubic root of 22820513 is about 283.6450012903.

The spelling of 22820513 in words is "twenty-two million, eight hundred twenty thousand, five hundred thirteen".