28001748980 has 24 divisors (see below), whose sum is σ = 58870305312. Its totient is φ = 11188007712.

The previous prime is 28001748941. The next prime is 28001748989. The reversal of 28001748980 is 8984710082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28001748989) 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, 775142 + ... + 810461.

It is an arithmetic number, because the mean of its divisors is an integer number (2452929388).

Almost surely, 2^28001748980 is an apocalyptic number.

28001748980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28001748980 is an abundant number, since it is smaller than the sum of its proper divisors (30868556332).

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

28001748980 is a wasteful number, since it uses less digits than its factorization.

28001748980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586495 (or 1586493 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 47.

The spelling of 28001748980 in words is "twenty-eight billion, one million, seven hundred forty-eight thousand, nine hundred eighty".