28758339 has 12 divisors (see below), whose sum is σ = 43983576. Its totient is φ = 18044352.

The previous prime is 28758329. The next prime is 28758371. The reversal of 28758339 is 93385782.

It is not a de Polignac number, because 28758339 - 2⁵ = 28758307 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28758294 and 28758303.

It is not an unprimeable number, because it can be changed into a prime (28758329) 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 11 ways as a sum of consecutive naturals, for example, 93829 + ... + 94134.

It is an arithmetic number, because the mean of its divisors is an integer number (3665298).

Almost surely, 2^28758339 is an apocalyptic number.

28758339 is a deficient number, since it is larger than the sum of its proper divisors (15225237).

28758339 is a wasteful number, since it uses less digits than its factorization.

28758339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187986 (or 187983 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 28758339 is about 5362.6802067623. The cubic root of 28758339 is about 306.3758997001.

The spelling of 28758339 in words is "twenty-eight million, seven hundred fifty-eight thousand, three hundred thirty-nine".