18028727400 has 96 divisors (see below), whose sum is σ = 55934812800. Its totient is φ = 4803724800.

The previous prime is 18028727371. The next prime is 18028727441. The reversal of 18028727400 is 472782081.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 761745 + ... + 785055.

It is an arithmetic number, because the mean of its divisors is an integer number (582654300).

Almost surely, 2^18028727400 is an apocalyptic number.

18028727400 is a gapful number since it is divisible by the number (10) 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 18028727400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27967406400).

18028727400 is an abundant number, since it is smaller than the sum of its proper divisors (37906085400).

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

18028727400 is a wasteful number, since it uses less digits than its factorization.

18028727400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24619 (or 24610 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 39.

The spelling of 18028727400 in words is "eighteen billion, twenty-eight million, seven hundred twenty-seven thousand, four hundred".