28914039 has 36 divisors (see below), whose sum is σ = 52478608. Its totient is φ = 15016320.

The previous prime is 28914037. The next prime is 28914043. The reversal of 28914039 is 93041982.

It is not a de Polignac number, because 28914039 - 2¹ = 28914037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28913994 and 28914012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28914031) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5727 + ... + 9519.

Almost surely, 2^28914039 is an apocalyptic number.

28914039 is a deficient number, since it is larger than the sum of its proper divisors (23564569).

28914039 is a wasteful number, since it uses less digits than its factorization.

28914039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3828 (or 3814 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 28914039 is about 5377.1776053986. The cubic root of 28914039 is about 306.9278195771.

The spelling of 28914039 in words is "twenty-eight million, nine hundred fourteen thousand, thirty-nine".