28812514 has 24 divisors (see below), whose sum is σ = 45768492. Its totient is φ = 13601280.

The previous prime is 28812503. The next prime is 28812517. The reversal of 28812514 is 41521882.

It can be written as a sum of positive squares in 2 ways, for example, as 27741289 + 1071225 = 5267^2 + 1035^2 .

It is not an unprimeable number, because it can be changed into a prime (28812517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 119434 + ... + 119674.

Almost surely, 2^28812514 is an apocalyptic number.

28812514 is a deficient number, since it is larger than the sum of its proper divisors (16955978).

28812514 is a wasteful number, since it uses less digits than its factorization.

28812514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402 (or 379 counting only the distinct ones).

The product of its digits is 5120, while the sum is 31.

The square root of 28812514 is about 5367.7289424858. The cubic root of 28812514 is about 306.5681628076.

The spelling of 28812514 in words is "twenty-eight million, eight hundred twelve thousand, five hundred fourteen".