28829013 has 4 divisors (see below), whose sum is σ = 38438688. Its totient is φ = 19219340.

The previous prime is 28829011. The next prime is 28829029. The reversal of 28829013 is 31092882.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28829013 - 2¹ = 28829011 is a prime.

It is a super-2 number, since 2×28829013² = 1662223981108338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28829011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4804833 + ... + 4804838.

It is an arithmetic number, because the mean of its divisors is an integer number (9609672).

Almost surely, 2^28829013 is an apocalyptic number.

It is an amenable number.

28829013 is a deficient number, since it is larger than the sum of its proper divisors (9609675).

28829013 is an equidigital number, since it uses as much as digits as its factorization.

28829013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9609674.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 28829013 is about 5369.2655922388. The cubic root of 28829013 is about 306.6266686701.

The spelling of 28829013 in words is "twenty-eight million, eight hundred twenty-nine thousand, thirteen".