28164284 has 6 divisors (see below), whose sum is σ = 49287504. Its totient is φ = 14082140.

The previous prime is 28164277. The next prime is 28164293. The reversal of 28164284 is 48246182.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 3520532 + ... + 3520539.

It is an arithmetic number, because the mean of its divisors is an integer number (8214584).

Almost surely, 2^28164284 is an apocalyptic number.

It is an amenable number.

28164284 is a deficient number, since it is larger than the sum of its proper divisors (21123220).

28164284 is a wasteful number, since it uses less digits than its factorization.

28164284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7041075 (or 7041073 counting only the distinct ones).

The product of its digits is 24576, while the sum is 35.

The square root of 28164284 is about 5307.0032975305. The cubic root of 28164284 is about 304.2516239653.

Subtracting from 28164284 its sum of digits (35), we obtain a square (28164249 = 5307²).

The spelling of 28164284 in words is "twenty-eight million, one hundred sixty-four thousand, two hundred eighty-four".