28898865797 has 8 divisors (see below), whose sum is σ = 29081194560. Its totient is φ = 28717086400.

The previous prime is 28898865761. The next prime is 28898865847. The reversal of 28898865797 is 79756889882.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28898865797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28898865397) 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, 31547 + ... + 242472.

It is an arithmetic number, because the mean of its divisors is an integer number (3635149320).

Almost surely, 2^28898865797 is an apocalyptic number.

It is an amenable number.

28898865797 is a deficient number, since it is larger than the sum of its proper divisors (182328763).

28898865797 is a wasteful number, since it uses less digits than its factorization.

28898865797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274683.

The product of its digits is 975421440, while the sum is 77.

The spelling of 28898865797 in words is "twenty-eight billion, eight hundred ninety-eight million, eight hundred sixty-five thousand, seven hundred ninety-seven".