22762991 has 2 divisors, whose sum is σ = 22762992. Its totient is φ = 22762990.

The previous prime is 22762973. The next prime is 22763003. The reversal of 22762991 is 19926722.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22762991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22762921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11381495 + 11381496.

It is an arithmetic number, because the mean of its divisors is an integer number (11381496).

Almost surely, 2^22762991 is an apocalyptic number.

22762991 is a deficient number, since it is larger than the sum of its proper divisors (1).

22762991 is an equidigital number, since it uses as much as digits as its factorization.

22762991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 38.

The square root of 22762991 is about 4771.0576395596. The cubic root of 22762991 is about 283.4064796921.

The spelling of 22762991 in words is "twenty-two million, seven hundred sixty-two thousand, nine hundred ninety-one".