28137514 has 4 divisors (see below), whose sum is σ = 42206274. Its totient is φ = 14068756.

The previous prime is 28137503. The next prime is 28137539. The reversal of 28137514 is 41573182.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 28037025 + 100489 = 5295^2 + 317^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7034377 + ... + 7034380.

Almost surely, 2^28137514 is an apocalyptic number.

28137514 is a deficient number, since it is larger than the sum of its proper divisors (14068760).

28137514 is a wasteful number, since it uses less digits than its factorization.

28137514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14068759.

The product of its digits is 6720, while the sum is 31.

The square root of 28137514 is about 5304.4805589237. The cubic root of 28137514 is about 304.1551968987.

The spelling of 28137514 in words is "twenty-eight million, one hundred thirty-seven thousand, five hundred fourteen".