22940513 has 4 divisors (see below), whose sum is σ = 23108100. Its totient is φ = 22772928.

The previous prime is 22940507. The next prime is 22940539. The reversal of 22940513 is 31504922.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9778129 + 13162384 = 3127^2 + 3628^2 .

It is a cyclic number.

It is not a de Polignac number, because 22940513 - 2¹⁰ = 22939489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22940503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83588 + ... + 83861.

It is an arithmetic number, because the mean of its divisors is an integer number (5777025).

Almost surely, 2^22940513 is an apocalyptic number.

It is an amenable number.

22940513 is a deficient number, since it is larger than the sum of its proper divisors (167587).

22940513 is a wasteful number, since it uses less digits than its factorization.

22940513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167586.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 22940513 is about 4789.6255594775. The cubic root of 22940513 is about 284.1413078775.

The spelling of 22940513 in words is "twenty-two million, nine hundred forty thousand, five hundred thirteen".