28840829 has 8 divisors (see below), whose sum is σ = 29291328. Its totient is φ = 28394080.

The previous prime is 28840807. The next prime is 28840883. The reversal of 28840829 is 92804882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28840829 - 2¹⁶ = 28775293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28849829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17144 + ... + 18750.

It is an arithmetic number, because the mean of its divisors is an integer number (3661416).

Almost surely, 2^28840829 is an apocalyptic number.

It is an amenable number.

28840829 is a deficient number, since it is larger than the sum of its proper divisors (450499).

28840829 is a wasteful number, since it uses less digits than its factorization.

28840829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875.

The product of its (nonzero) digits is 73728, while the sum is 41.

The square root of 28840829 is about 5370.3658162177. The cubic root of 28840829 is about 306.6685547825.

The spelling of 28840829 in words is "twenty-eight million, eight hundred forty thousand, eight hundred twenty-nine".