28199791300 has 72 divisors (see below), whose sum is σ = 62915438432. Its totient is φ = 10965024000.

The previous prime is 28199791271. The next prime is 28199791337. The reversal of 28199791300 is 319799182.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 891760 + ... + 922840.

Almost surely, 2^28199791300 is an apocalyptic number.

28199791300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28199791300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31457719216).

28199791300 is an abundant number, since it is smaller than the sum of its proper divisors (34715647132).

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

28199791300 is a wasteful number, since it uses less digits than its factorization.

28199791300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31349 (or 31342 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 49.

The spelling of 28199791300 in words is "twenty-eight billion, one hundred ninety-nine million, seven hundred ninety-one thousand, three hundred".