28333907 has 24 divisors (see below), whose sum is σ = 35546112. Its totient is φ = 22453200.

The previous prime is 28333901. The next prime is 28333933. The reversal of 28333907 is 70933382.

It is not a de Polignac number, because 28333907 - 2⁴ = 28333891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28333901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34532 + ... + 35342.

It is an arithmetic number, because the mean of its divisors is an integer number (1481088).

Almost surely, 2^28333907 is an apocalyptic number.

28333907 is a deficient number, since it is larger than the sum of its proper divisors (7212205).

28333907 is a wasteful number, since it uses less digits than its factorization.

28333907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879 (or 872 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 28333907 is about 5322.9603605513. The cubic root of 28333907 is about 304.8611999455.

The spelling of 28333907 in words is "twenty-eight million, three hundred thirty-three thousand, nine hundred seven".