28897714 has 4 divisors (see below), whose sum is σ = 43346574. Its totient is φ = 14448856.

The previous prime is 28897709. The next prime is 28897721. The reversal of 28897714 is 41779882.

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., 28804689 + 93025 = 5367^2 + 305^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7224427 + ... + 7224430.

Almost surely, 2^28897714 is an apocalyptic number.

28897714 is a deficient number, since it is larger than the sum of its proper divisors (14448860).

28897714 is a wasteful number, since it uses less digits than its factorization.

28897714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14448859.

The product of its digits is 225792, while the sum is 46.

The square root of 28897714 is about 5375.6594014130. The cubic root of 28897714 is about 306.8700444140.

The spelling of 28897714 in words is "twenty-eight million, eight hundred ninety-seven thousand, seven hundred fourteen".