28099613 has 8 divisors (see below), whose sum is σ = 30378720. Its totient is φ = 25900560.

The previous prime is 28099601. The next prime is 28099619. The reversal of 28099613 is 31699082.

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 28099613 - 2⁶ = 28099549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28099619) 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, 19283 + ... + 20688.

It is an arithmetic number, because the mean of its divisors is an integer number (3797340).

Almost surely, 2^28099613 is an apocalyptic number.

It is an amenable number.

28099613 is a deficient number, since it is larger than the sum of its proper divisors (2279107).

28099613 is a wasteful number, since it uses less digits than its factorization.

28099613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40027.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 28099613 is about 5300.9068092167. The cubic root of 28099613 is about 304.0185706857.

The spelling of 28099613 in words is "twenty-eight million, ninety-nine thousand, six hundred thirteen".