28407933 has 12 divisors (see below), whose sum is σ = 41647008. Its totient is φ = 18655560.

The previous prime is 28407919. The next prime is 28407937. The reversal of 28407933 is 33970482.

It is not a de Polignac number, because 28407933 - 2⁴ = 28407917 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28407937) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22953 + ... + 24158.

It is an arithmetic number, because the mean of its divisors is an integer number (3470584).

Almost surely, 2^28407933 is an apocalyptic number.

It is an amenable number.

28407933 is a deficient number, since it is larger than the sum of its proper divisors (13239075).

28407933 is a wasteful number, since it uses less digits than its factorization.

28407933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47184 (or 47181 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 28407933 is about 5329.9092862825. The cubic root of 28407933 is about 305.1264655161.

The spelling of 28407933 in words is "twenty-eight million, four hundred seven thousand, nine hundred thirty-three".