18674500 has 96 divisors (see below), whose sum is σ = 46781280. Its totient is φ = 6489600.

The previous prime is 18674489. The next prime is 18674501. The reversal of 18674500 is 547681.

It can be written as a sum of positive squares in 16 ways, for example, as 17455684 + 1218816 = 4178^2 + 1104^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18674501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1098492 + ... + 1098508.

It is an arithmetic number, because the mean of its divisors is an integer number (487305).

Almost surely, 2^18674500 is an apocalyptic number.

18674500 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 18674500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23390640).

18674500 is an abundant number, since it is smaller than the sum of its proper divisors (28106780).

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

18674500 is a wasteful number, since it uses less digits than its factorization.

18674500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75 (or 37 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 18674500 is about 4321.4002360346. The cubic root of 18674500 is about 265.3075816246.

The spelling of 18674500 in words is "eighteen million, six hundred seventy-four thousand, five hundred".