28038764898 has 64 divisors (see below), whose sum is σ = 64498032000. Its totient is φ = 9018217152.

The previous prime is 28038764891. The next prime is 28038764899. The reversal of 28038764898 is 89846783082.

28038764898 is a `hidden beast` number, since 2 + 80 + 3 + 8 + 76 + 489 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (28038764891) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2934613 + ... + 2944151.

It is an arithmetic number, because the mean of its divisors is an integer number (1007781750).

Almost surely, 2^28038764898 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28038764898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32249016000).

28038764898 is an abundant number, since it is smaller than the sum of its proper divisors (36459267102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28038764898 is a wasteful number, since it uses less digits than its factorization.

28038764898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11456 (or 11450 counting only the distinct ones).

The product of its (nonzero) digits is 37158912, while the sum is 63.

The spelling of 28038764898 in words is "twenty-eight billion, thirty-eight million, seven hundred sixty-four thousand, eight hundred ninety-eight".