22733891 has 2 divisors, whose sum is σ = 22733892. Its totient is φ = 22733890.

The previous prime is 22733869. The next prime is 22733897. The reversal of 22733891 is 19833722.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22733891 - 2⁶ = 22733827 is a prime.

It is not a weakly prime, because it can be changed into another prime (22733897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11366945 + 11366946.

It is an arithmetic number, because the mean of its divisors is an integer number (11366946).

Almost surely, 2^22733891 is an apocalyptic number.

22733891 is a deficient number, since it is larger than the sum of its proper divisors (1).

22733891 is an equidigital number, since it uses as much as digits as its factorization.

22733891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 22733891 is about 4768.0070260015. The cubic root of 22733891 is about 283.2856601067.

The spelling of 22733891 in words is "twenty-two million, seven hundred thirty-three thousand, eight hundred ninety-one".