28616899 has 8 divisors (see below), whose sum is σ = 31618080. Its totient is φ = 25762176.

The previous prime is 28616879. The next prime is 28616927. The reversal of 28616899 is 99861682.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28616899 - 2⁵ = 28616867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28616849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36204 + ... + 36985.

It is an arithmetic number, because the mean of its divisors is an integer number (3952260).

Almost surely, 2^28616899 is an apocalyptic number.

28616899 is a deficient number, since it is larger than the sum of its proper divisors (3001181).

28616899 is a wasteful number, since it uses less digits than its factorization.

28616899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73229.

The product of its digits is 373248, while the sum is 49.

The square root of 28616899 is about 5349.4765164453. The cubic root of 28616899 is about 305.8727987408.

The spelling of 28616899 in words is "twenty-eight million, six hundred sixteen thousand, eight hundred ninety-nine".