28979829 has 16 divisors (see below), whose sum is σ = 43362240. Its totient is φ = 19126800.

The previous prime is 28979827. The next prime is 28979831. The reversal of 28979829 is 92897982.

It is an interprime number because it is at equal distance from previous prime (28979827) and next prime (28979831).

It is not a de Polignac number, because 28979829 - 2¹ = 28979827 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28979827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2587 + ... + 8040.

It is an arithmetic number, because the mean of its divisors is an integer number (2710140).

Almost surely, 2^28979829 is an apocalyptic number.

It is an amenable number.

28979829 is a deficient number, since it is larger than the sum of its proper divisors (14382411).

28979829 is a wasteful number, since it uses less digits than its factorization.

28979829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10737 (or 10731 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 28979829 is about 5383.2916510254. The cubic root of 28979829 is about 307.1604342049.

The spelling of 28979829 in words is "twenty-eight million, nine hundred seventy-nine thousand, eight hundred twenty-nine".