28898640016 has 15 divisors (see below), whose sum is σ = 55992432531. Its totient is φ = 14448980016.

The previous prime is 28898640011. The next prime is 28898640031. The reversal of 28898640016 is 61004689882.

The square root of 28898640016 is 169996.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28898640011) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 658735 + ... + 701233.

Almost surely, 2^28898640016 is an apocalyptic number.

28898640016 is the 169996-th square number.

It is an amenable number.

28898640016 is a deficient number, since it is larger than the sum of its proper divisors (27093792515).

28898640016 is an frugal number, since it uses more digits than its factorization.

28898640016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85006 (or 42501 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 52.

The spelling of 28898640016 in words is "twenty-eight billion, eight hundred ninety-eight million, six hundred forty thousand, sixteen".