18147792 has 80 divisors (see below), whose sum is σ = 51107840. Its totient is φ = 5515776.

The previous prime is 18147769. The next prime is 18147839. The reversal of 18147792 is 29774181.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 18147792.

It is a congruent number.

It is an unprimeable number.

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, 79134 + ... + 79362.

It is an arithmetic number, because the mean of its divisors is an integer number (638848).

Almost surely, 2^18147792 is an apocalyptic number.

18147792 is a gapful number since it is divisible by the number (12) 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 18147792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25553920).

18147792 is an abundant number, since it is smaller than the sum of its proper divisors (32960048).

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

18147792 is a wasteful number, since it uses less digits than its factorization.

18147792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380 (or 374 counting only the distinct ones).

The product of its digits is 28224, while the sum is 39.

The square root of 18147792 is about 4260.0225351517. The cubic root of 18147792 is about 262.7894530447.

The spelling of 18147792 in words is "eighteen million, one hundred forty-seven thousand, seven hundred ninety-two".