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22793 = 23991

22793 has 4 divisors (see below), whose sum is σ = 23808. Its totient is φ = 21780.

The previous prime is 22787. The next prime is 22807. The reversal of 22793 is 39722.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39722 = 219861.

It is a cyclic number.

It is not a de Polignac number, because 22793 - 24 = 22777 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 991 = 22793 / (2 + 2 + 7 + 9 + 3).

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 12.

It is a nialpdrome in base 8 and base 14.

It is not an unprimeable number, because it can be changed into a prime (22783) 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, 473 + ... + 518.

It is an arithmetic number, because the mean of its divisors is an integer number (5952).

222793 is an apocalyptic number.

22793 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

22793 is a deficient number, since it is larger than the sum of its proper divisors (1015).

22793 is an equidigital number, since it uses as much as digits as its factorization.

22793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014.

The product of its digits is 756, while the sum is 23.

The square root of 22793 is about 150.9735076098. The cubic root of 22793 is about 28.3530965536.

The spelling of 22793 in words is "twenty-two thousand, seven hundred ninety-three".

Divisors: 1 23 991 22793