28110736240 has 40 divisors (see below), whose sum is σ = 69202021680. Its totient is φ = 10582864896.

The previous prime is 28110736217. The next prime is 28110736243. The reversal of 28110736240 is 4263701182.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 28110736196 and 28110736205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28110736243) 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, 10333470 + ... + 10336189.

It is an arithmetic number, because the mean of its divisors is an integer number (1730050542).

Almost surely, 2^28110736240 is an apocalyptic number.

28110736240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28110736240 is an abundant number, since it is smaller than the sum of its proper divisors (41091285440).

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

28110736240 is a wasteful number, since it uses less digits than its factorization.

28110736240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20669689 (or 20669683 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The spelling of 28110736240 in words is "twenty-eight billion, one hundred ten million, seven hundred thirty-six thousand, two hundred forty".