28829393 has 16 divisors (see below), whose sum is σ = 31099200. Its totient is φ = 26671680.

The previous prime is 28829357. The next prime is 28829407. The reversal of 28829393 is 39392882.

It is a cyclic number.

It is not a de Polignac number, because 28829393 - 2¹² = 28825297 is a prime.

It is a super-2 number, since 2×28829393² = 1662267801496898, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28826393) 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, 75878 + ... + 76256.

It is an arithmetic number, because the mean of its divisors is an integer number (1943700).

Almost surely, 2^28829393 is an apocalyptic number.

It is an amenable number.

28829393 is a deficient number, since it is larger than the sum of its proper divisors (2269807).

28829393 is a wasteful number, since it uses less digits than its factorization.

28829393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512.

The product of its digits is 186624, while the sum is 44.

The square root of 28829393 is about 5369.3009787122. The cubic root of 28829393 is about 306.6280158965.

The spelling of 28829393 in words is "twenty-eight million, eight hundred twenty-nine thousand, three hundred ninety-three".