28934169 has 16 divisors (see below), whose sum is σ = 44302080. Its totient is φ = 16612560.

The previous prime is 28934149. The next prime is 28934179. The reversal of 28934169 is 96143982.

28934169 is nontrivially palindromic in base 12.

It is not a de Polignac number, because 28934169 - 2⁵ = 28934137 is a prime.

It is a super-2 number, since 2×28934169² = 1674372271441122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28934169.

It is not an unprimeable number, because it can be changed into a prime (28934149) 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, 22447 + ... + 23700.

It is an arithmetic number, because the mean of its divisors is an integer number (2768880).

Almost surely, 2^28934169 is an apocalyptic number.

It is an amenable number.

28934169 is a deficient number, since it is larger than the sum of its proper divisors (15367911).

28934169 is a wasteful number, since it uses less digits than its factorization.

28934169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46180.

The product of its digits is 93312, while the sum is 42.

The square root of 28934169 is about 5379.0490795307. The cubic root of 28934169 is about 306.9990309327. Note that the first 3 decimals are identical.

The spelling of 28934169 in words is "twenty-eight million, nine hundred thirty-four thousand, one hundred sixty-nine".