28922049 has 64 divisors (see below), whose sum is σ = 50561280. Its totient is φ = 16174080.

The previous prime is 28922041. The next prime is 28922053. The reversal of 28922049 is 94022982.

It is not a de Polignac number, because 28922049 - 2³ = 28922041 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (28922041) 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 63 ways as a sum of consecutive naturals, for example, 220714 + ... + 220844.

It is an arithmetic number, because the mean of its divisors is an integer number (790020).

Almost surely, 2^28922049 is an apocalyptic number.

It is an amenable number.

28922049 is a deficient number, since it is larger than the sum of its proper divisors (21639231).

28922049 is a wasteful number, since it uses less digits than its factorization.

28922049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 28922049 is about 5377.9223683501. The cubic root of 28922049 is about 306.9561594992.

The spelling of 28922049 in words is "twenty-eight million, nine hundred twenty-two thousand, forty-nine".