18052740 has 96 divisors (see below), whose sum is σ = 56891520. Its totient is φ = 4752000.

The previous prime is 18052729. The next prime is 18052813. The reversal of 18052740 is 4725081.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 31 ways as a sum of consecutive naturals, for example, 54375 + ... + 54705.

It is an arithmetic number, because the mean of its divisors is an integer number (592620).

Almost surely, 2^18052740 is an apocalyptic number.

18052740 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 18052740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28445760).

18052740 is an abundant number, since it is smaller than the sum of its proper divisors (38838780).

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

18052740 is a wasteful number, since it uses less digits than its factorization.

18052740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450 (or 442 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 18052740 is about 4248.8516095529. The cubic root of 18052740 is about 262.3298489165.

The spelling of 18052740 in words is "eighteen million, fifty-two thousand, seven hundred forty".