18734976 has 160 divisors (see below), whose sum is σ = 60475800. Its totient is φ = 5723136.

The previous prime is 18734959. The next prime is 18734977. The reversal of 18734976 is 67943781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18734977) 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 19 ways as a sum of consecutive naturals, for example, 134715 + ... + 134853.

Almost surely, 2^18734976 is an apocalyptic number.

18734976 is a gapful number since it is divisible by the number (16) 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 18734976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30237900).

18734976 is an abundant number, since it is smaller than the sum of its proper divisors (41740824).

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

18734976 is a wasteful number, since it uses less digits than its factorization.

18734976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178 (or 157 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 18734976 is about 4328.3918491745. The cubic root of 18734976 is about 265.5936660801.

The spelling of 18734976 in words is "eighteen million, seven hundred thirty-four thousand, nine hundred seventy-six".