28716992 has 14 divisors (see below), whose sum is σ = 56985408. Its totient is φ = 14358464.

The previous prime is 28716979. The next prime is 28716997. The reversal of 28716992 is 29961782.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28716997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224288 + ... + 224415.

Almost surely, 2^28716992 is an apocalyptic number.

It is an amenable number.

28716992 is a deficient number, since it is larger than the sum of its proper divisors (28268416).

28716992 is an equidigital number, since it uses as much as digits as its factorization.

28716992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448715 (or 448705 counting only the distinct ones).

The product of its digits is 108864, while the sum is 44.

The square root of 28716992 is about 5358.8237515335. The cubic root of 28716992 is about 306.2289996984.

The spelling of 28716992 in words is "twenty-eight million, seven hundred sixteen thousand, nine hundred ninety-two".