22991833 has 2 divisors, whose sum is σ = 22991834. Its totient is φ = 22991832.

The previous prime is 22991827. The next prime is 22991849. The reversal of 22991833 is 33819922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16999129 + 5992704 = 4123^2 + 2448^2 .

It is a cyclic number.

It is not a de Polignac number, because 22991833 - 2⁹ = 22991321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22991792 and 22991801.

It is not a weakly prime, because it can be changed into another prime (22991233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11495916 + 11495917.

It is an arithmetic number, because the mean of its divisors is an integer number (11495917).

Almost surely, 2^22991833 is an apocalyptic number.

It is an amenable number.

22991833 is a deficient number, since it is larger than the sum of its proper divisors (1).

22991833 is an equidigital number, since it uses as much as digits as its factorization.

22991833 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 37.

The square root of 22991833 is about 4794.9799791031. The cubic root of 22991833 is about 284.3530333312.

The spelling of 22991833 in words is "twenty-two million, nine hundred ninety-one thousand, eight hundred thirty-three".