28753780360 has 16 divisors (see below), whose sum is σ = 64696005900. Its totient is φ = 11501512128.

The previous prime is 28753780301. The next prime is 28753780373. The reversal of 28753780360 is 6308735782.

It can be written as a sum of positive squares in 2 ways, for example, as 27536747364 + 1217032996 = 165942^2 + 34886^2 .

It is a super-2 number, since 2×28753780360² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359422215 + ... + 359422294.

Almost surely, 2^28753780360 is an apocalyptic number.

28753780360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28753780360 is an abundant number, since it is smaller than the sum of its proper divisors (35942225540).

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

28753780360 is a wasteful number, since it uses less digits than its factorization.

28753780360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718844520 (or 718844516 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 28753780360 in words is "twenty-eight billion, seven hundred fifty-three million, seven hundred eighty thousand, three hundred sixty".