28696499 has 4 divisors (see below), whose sum is σ = 30903936. Its totient is φ = 26489064.

The previous prime is 28696489. The next prime is 28696511. The reversal of 28696499 is 99469682.

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

It is a cyclic number.

It is not a de Polignac number, because 28696499 - 2¹² = 28692403 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28696499.

It is not an unprimeable number, because it can be changed into a prime (28696439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1103699 + ... + 1103724.

It is an arithmetic number, because the mean of its divisors is an integer number (7725984).

Almost surely, 2^28696499 is an apocalyptic number.

28696499 is a deficient number, since it is larger than the sum of its proper divisors (2207437).

28696499 is a wasteful number, since it uses less digits than its factorization.

28696499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2207436.

The product of its digits is 1679616, while the sum is 53.

The square root of 28696499 is about 5356.9113302350. The cubic root of 28696499 is about 306.1561387216.

The spelling of 28696499 in words is "twenty-eight million, six hundred ninety-six thousand, four hundred ninety-nine".