18540750 has 64 divisors (see below), whose sum is σ = 47174400. Its totient is φ = 4848800.

The previous prime is 18540719. The next prime is 18540757. The reversal of 18540750 is 5704581.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18540757) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 44041 + ... + 44459.

It is an arithmetic number, because the mean of its divisors is an integer number (737100).

Almost surely, 2^18540750 is an apocalyptic number.

18540750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18540750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23587200).

18540750 is an abundant number, since it is smaller than the sum of its proper divisors (28633650).

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

18540750 is a wasteful number, since it uses less digits than its factorization.

18540750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498 (or 488 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 18540750 is about 4305.8971190682. The cubic root of 18540750 is about 264.6726704882.

The spelling of 18540750 in words is "eighteen million, five hundred forty thousand, seven hundred fifty".