28164435 has 32 divisors (see below), whose sum is σ = 49062720. Its totient is φ = 13713408.

The previous prime is 28164419. The next prime is 28164457. The reversal of 28164435 is 53446182.

It is not a de Polignac number, because 28164435 - 2⁴ = 28164419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28164396 and 28164405.

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 31 ways as a sum of consecutive naturals, for example, 18171 + ... + 19659.

It is an arithmetic number, because the mean of its divisors is an integer number (1533210).

Almost surely, 2^28164435 is an apocalyptic number.

28164435 is a deficient number, since it is larger than the sum of its proper divisors (20898285).

28164435 is a wasteful number, since it uses less digits than its factorization.

28164435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607.

The product of its digits is 23040, while the sum is 33.

The square root of 28164435 is about 5307.0175239959. The cubic root of 28164435 is about 304.2521677026.

The spelling of 28164435 in words is "twenty-eight million, one hundred sixty-four thousand, four hundred thirty-five".