28989914 has 4 divisors (see below), whose sum is σ = 43484874. Its totient is φ = 14494956.

The previous prime is 28989901. The next prime is 28989931. The reversal of 28989914 is 41998982.

It is a happy number.

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., 28976689 + 13225 = 5383^2 + 115^2 .

It is a super-2 number, since 2×28989914² = 1680830227454792, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7247477 + ... + 7247480.

Almost surely, 2^28989914 is an apocalyptic number.

28989914 is a deficient number, since it is larger than the sum of its proper divisors (14494960).

28989914 is a wasteful number, since it uses less digits than its factorization.

28989914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14494959.

The product of its digits is 373248, while the sum is 50.

The square root of 28989914 is about 5384.2282641062. The cubic root of 28989914 is about 307.1960607518.

The spelling of 28989914 in words is "twenty-eight million, nine hundred eighty-nine thousand, nine hundred fourteen".