18673704 has 144 divisors (see below), whose sum is σ = 60465600. Its totient is φ = 5189184.

The previous prime is 18673703. The next prime is 18673729. The reversal of 18673704 is 40737681.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (18673703) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 236337 + ... + 236415.

It is an arithmetic number, because the mean of its divisors is an integer number (419900).

Almost surely, 2^18673704 is an apocalyptic number.

18673704 is a gapful number since it is divisible by the number (14) 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 18673704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30232800).

18673704 is an abundant number, since it is smaller than the sum of its proper divisors (41791896).

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

18673704 is a wasteful number, since it uses less digits than its factorization.

18673704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 18673704 is about 4321.3081352757. The cubic root of 18673704 is about 265.3038119952.

The spelling of 18673704 in words is "eighteen million, six hundred seventy-three thousand, seven hundred four".