22257829 has 6 divisors (see below), whose sum is σ = 24465350. Its totient is φ = 20234280.

The previous prime is 22257779. The next prime is 22257881. The reversal of 22257829 is 92875222.

It can be written as a sum of positive squares in only one way, i.e., 17656804 + 4601025 = 4202^2 + 2145^2 .

It is not a de Polignac number, because 22257829 - 2⁹ = 22257317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22257889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 91854 + ... + 92095.

Almost surely, 2^22257829 is an apocalyptic number.

It is an amenable number.

22257829 is a deficient number, since it is larger than the sum of its proper divisors (2207521).

22257829 is a wasteful number, since it uses less digits than its factorization.

22257829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183971 (or 183960 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 22257829 is about 4717.8203653806. The cubic root of 22257829 is about 281.2943012355.

The spelling of 22257829 in words is "twenty-two million, two hundred fifty-seven thousand, eight hundred twenty-nine".