22802749 has 2 divisors, whose sum is σ = 22802750. Its totient is φ = 22802748.

The previous prime is 22802743. The next prime is 22802783. The reversal of 22802749 is 94720822.

It is an a-pointer prime, because the next prime (22802783) can be obtained adding 22802749 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19740249 + 3062500 = 4443^2 + 1750^2 .

It is a cyclic number.

It is not a de Polignac number, because 22802749 - 2⁷ = 22802621 is a prime.

It is equal to p_1436569 and since 22802749 and 1436569 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22802743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11401374 + 11401375.

It is an arithmetic number, because the mean of its divisors is an integer number (11401375).

Almost surely, 2^22802749 is an apocalyptic number.

It is an amenable number.

22802749 is a deficient number, since it is larger than the sum of its proper divisors (1).

22802749 is an equidigital number, since it uses as much as digits as its factorization.

22802749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 22802749 is about 4775.2224031976. Note that the first 3 decimals coincide. The cubic root of 22802749 is about 283.5713836380.

The spelling of 22802749 in words is "twenty-two million, eight hundred two thousand, seven hundred forty-nine".