28290829 has 16 divisors (see below), whose sum is σ = 34960000. Its totient is φ = 22348224.

The previous prime is 28290827. The next prime is 28290833. The reversal of 28290829 is 92809282.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 28290829 - 2¹ = 28290827 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28290791 and 28290800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28290827) 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, 2047 + ... + 7795.

It is an arithmetic number, because the mean of its divisors is an integer number (2185000).

Almost surely, 2^28290829 is an apocalyptic number.

It is an amenable number.

28290829 is a deficient number, since it is larger than the sum of its proper divisors (6669171).

28290829 is a wasteful number, since it uses less digits than its factorization.

28290829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5812.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 28290829 is about 5318.9123888254. The cubic root of 28290829 is about 304.7066210520.

The spelling of 28290829 in words is "twenty-eight million, two hundred ninety thousand, eight hundred twenty-nine".