22702993 has 4 divisors (see below), whose sum is σ = 22715188. Its totient is φ = 22690800.

The previous prime is 22702991. The next prime is 22702997. The reversal of 22702993 is 39920722.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 39920722 = 2 ⋅19960361.

It can be written as a sum of positive squares in 2 ways, for example, as 15429184 + 7273809 = 3928^2 + 2697^2 .

It is a cyclic number.

It is not a de Polignac number, because 22702993 - 2¹ = 22702991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22702991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2658 + ... + 7243.

It is an arithmetic number, because the mean of its divisors is an integer number (5678797).

Almost surely, 2^22702993 is an apocalyptic number.

It is an amenable number.

22702993 is a deficient number, since it is larger than the sum of its proper divisors (12195).

22702993 is an equidigital number, since it uses as much as digits as its factorization.

22702993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12194.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 22702993 is about 4764.7657864789. The cubic root of 22702993 is about 283.1572625415.

The spelling of 22702993 in words is "twenty-two million, seven hundred two thousand, nine hundred ninety-three".