28265146 has 16 divisors (see below), whose sum is σ = 52182144. Its totient is φ = 11181744.

The previous prime is 28265093. The next prime is 28265177. The reversal of 28265146 is 64156282.

It is a super-3 number, since 3×28265146³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77470 + ... + 77833.

It is an arithmetic number, because the mean of its divisors is an integer number (3261384).

Almost surely, 2^28265146 is an apocalyptic number.

28265146 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28265146 is a deficient number, since it is larger than the sum of its proper divisors (23916998).

28265146 is a wasteful number, since it uses less digits than its factorization.

28265146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155325.

The product of its digits is 23040, while the sum is 34.

The square root of 28265146 is about 5316.4975312700. The cubic root of 28265146 is about 304.6143868103.

The spelling of 28265146 in words is "twenty-eight million, two hundred sixty-five thousand, one hundred forty-six".