28149490760 has 64 divisors (see below), whose sum is σ = 64846267200. Its totient is φ = 10991667456.

The previous prime is 28149490741. The next prime is 28149490801. The reversal of 28149490760 is 6709494182.

It is a junction number, because it is equal to n+sod(n) for n = 28149490699 and 28149490708.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4019582 + ... + 4026578.

It is an arithmetic number, because the mean of its divisors is an integer number (1013222925).

Almost surely, 2^28149490760 is an apocalyptic number.

28149490760 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 28149490760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32423133600).

28149490760 is an abundant number, since it is smaller than the sum of its proper divisors (36696776440).

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

28149490760 is a wasteful number, since it uses less digits than its factorization.

28149490760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9390 (or 9386 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 28149490760 in words is "twenty-eight billion, one hundred forty-nine million, four hundred ninety thousand, seven hundred sixty".