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22993 is a prime number
BaseRepresentation
bin101100111010001
31011112121
411213101
51213433
6254241
7124015
oct54721
934477
1022993
1116303
1211381
13a609
148545
156c2d
hex59d1

22993 has 2 divisors, whose sum is σ = 22994. Its totient is φ = 22992.

The previous prime is 22973. The next prime is 23003. The reversal of 22993 is 39922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21904 + 1089 = 148^2 + 33^2 .

It is a cyclic number.

It is not a de Polignac number, because 22993 - 25 = 22961 is a prime.

It is a plaindrome in base 9.

It is not a weakly prime, because it can be changed into another prime (22943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11496 + 11497.

It is an arithmetic number, because the mean of its divisors is an integer number (11497).

222993 is an apocalyptic number.

It is an amenable number.

22993 is a deficient number, since it is larger than the sum of its proper divisors (1).

22993 is an equidigital number, since it uses as much as digits as its factorization.

22993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972, while the sum is 25.

The square root of 22993 is about 151.6344288082. The cubic root of 22993 is about 28.4357844233.

The spelling of 22993 in words is "twenty-two thousand, nine hundred ninety-three".