28873635 has 64 divisors (see below), whose sum is σ = 57093120. Its totient is φ = 12165120.

The previous prime is 28873627. The next prime is 28873687. The reversal of 28873635 is 53637882.

It is not a de Polignac number, because 28873635 - 2³ = 28873627 is a prime.

It is a super-2 number, since 2×28873635² = 1667373596226450, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 81619 + ... + 81971.

It is an arithmetic number, because the mean of its divisors is an integer number (892080).

Almost surely, 2^28873635 is an apocalyptic number.

28873635 is a deficient number, since it is larger than the sum of its proper divisors (28219485).

28873635 is a wasteful number, since it uses less digits than its factorization.

28873635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428.

The product of its digits is 241920, while the sum is 42.

The square root of 28873635 is about 5373.4193024554. The cubic root of 28873635 is about 306.7847876462.

The spelling of 28873635 in words is "twenty-eight million, eight hundred seventy-three thousand, six hundred thirty-five".