28823949 has 24 divisors (see below), whose sum is σ = 51909312. Its totient is φ = 14973120.

The previous prime is 28823933. The next prime is 28823953. The reversal of 28823949 is 94932882.

It is not a de Polignac number, because 28823949 - 2⁴ = 28823933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28823909) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20104 + ... + 21489.

It is an arithmetic number, because the mean of its divisors is an integer number (2162888).

Almost surely, 2^28823949 is an apocalyptic number.

It is an amenable number.

28823949 is a deficient number, since it is larger than the sum of its proper divisors (23085363).

28823949 is a wasteful number, since it uses less digits than its factorization.

28823949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41617 (or 41614 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 28823949 is about 5368.7939986556. The cubic root of 28823949 is about 306.6087139755.

The spelling of 28823949 in words is "twenty-eight million, eight hundred twenty-three thousand, nine hundred forty-nine".