28083620609 has 16 divisors (see below), whose sum is σ = 32055920640. Its totient is φ = 24353918160.

The previous prime is 28083620597. The next prime is 28083620629. The reversal of 28083620609 is 90602638082.

It is not a de Polignac number, because 28083620609 - 2³² = 23788653313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28083620609.

It is not an unprimeable number, because it can be changed into a prime (28083620629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58379 + ... + 244080.

It is an arithmetic number, because the mean of its divisors is an integer number (2003495040).

Almost surely, 2^28083620609 is an apocalyptic number.

It is an amenable number.

28083620609 is a deficient number, since it is larger than the sum of its proper divisors (3972300031).

28083620609 is a wasteful number, since it uses less digits than its factorization.

28083620609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302860.

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 28083620609 in words is "twenty-eight billion, eighty-three million, six hundred twenty thousand, six hundred nine".