18280470528 has 192 divisors, whose sum is σ = 54376358400. Its totient is φ = 6068183040.

The previous prime is 18280470521. The next prime is 18280470553. The reversal of 18280470528 is 82507408281.

It is a happy number.

18280470528 is a `hidden beast` number, since 1 + 8 + 2 + 80 + 47 + 0 + 528 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18280470521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17196525 + ... + 17197587.

It is an arithmetic number, because the mean of its divisors is an integer number (283210200).

Almost surely, 2^18280470528 is an apocalyptic number.

18280470528 is a gapful number since it is divisible by the number (18) 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 18280470528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27188179200).

18280470528 is an abundant number, since it is smaller than the sum of its proper divisors (36095887872).

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

18280470528 is a wasteful number, since it uses less digits than its factorization.

18280470528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405 (or 1379 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 45.

The spelling of 18280470528 in words is "eighteen billion, two hundred eighty million, four hundred seventy thousand, five hundred twenty-eight".