28407339 has 6 divisors (see below), whose sum is σ = 41032836. Its totient is φ = 18938220.

The previous prime is 28407329. The next prime is 28407341. The reversal of 28407339 is 93370482.

It is not a de Polignac number, because 28407339 - 2¹⁷ = 28276267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28407319) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1578177 + ... + 1578194.

It is an arithmetic number, because the mean of its divisors is an integer number (6838806).

Almost surely, 2^28407339 is an apocalyptic number.

28407339 is a deficient number, since it is larger than the sum of its proper divisors (12625497).

28407339 is a wasteful number, since it uses less digits than its factorization.

28407339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3156377 (or 3156374 counting only the distinct ones).

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

The square root of 28407339 is about 5329.8535627163. The cubic root of 28407339 is about 305.1243388052.

The spelling of 28407339 in words is "twenty-eight million, four hundred seven thousand, three hundred thirty-nine".