28899590997 has 8 divisors (see below), whose sum is σ = 40799422656. Its totient is φ = 18133076672.

The previous prime is 28899590983. The next prime is 28899591023. The reversal of 28899590997 is 79909599882.

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 28899590997 - 2¹² = 28899586901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28899590897) 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, 283329273 + ... + 283329374.

It is an arithmetic number, because the mean of its divisors is an integer number (5099927832).

Almost surely, 2^28899590997 is an apocalyptic number.

It is an amenable number.

28899590997 is a deficient number, since it is larger than the sum of its proper divisors (11899831659).

28899590997 is a wasteful number, since it uses less digits than its factorization.

28899590997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566658667.

The product of its (nonzero) digits is 264539520, while the sum is 75.

The spelling of 28899590997 in words is "twenty-eight billion, eight hundred ninety-nine million, five hundred ninety thousand, nine hundred ninety-seven".