28297340100 has 108 divisors (see below), whose sum is σ = 88798941504. Its totient is φ = 7537237440.

The previous prime is 28297340011. The next prime is 28297340117. The reversal of 28297340100 is 104379282.

28297340100 is a `hidden beast` number, since 28 + 297 + 340 + 1 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 780577 + ... + 816023.

Almost surely, 2^28297340100 is an apocalyptic number.

28297340100 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 28297340100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44399470752).

28297340100 is an abundant number, since it is smaller than the sum of its proper divisors (60501601404).

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

28297340100 is a wasteful number, since it uses less digits than its factorization.

28297340100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36354 (or 36344 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 28297340100 in words is "twenty-eight billion, two hundred ninety-seven million, three hundred forty thousand, one hundred".