28796986 has 4 divisors (see below), whose sum is σ = 43195482. Its totient is φ = 14398492.

The previous prime is 28796981. The next prime is 28797011. The reversal of 28796986 is 68969782.

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., 22268961 + 6528025 = 4719^2 + 2555^2 .

It is not an unprimeable number, because it can be changed into a prime (28796981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7199245 + ... + 7199248.

Almost surely, 2^28796986 is an apocalyptic number.

28796986 is a deficient number, since it is larger than the sum of its proper divisors (14398496).

28796986 is a wasteful number, since it uses less digits than its factorization.

28796986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14398495.

The product of its digits is 2612736, while the sum is 55.

The square root of 28796986 is about 5366.2823257820. The cubic root of 28796986 is about 306.5130797296.

The spelling of 28796986 in words is "twenty-eight million, seven hundred ninety-six thousand, nine hundred eighty-six".