18736016 has 50 divisors (see below), whose sum is σ = 40285182. Its totient is φ = 8436480.

The previous prime is 18735979. The next prime is 18736019. The reversal of 18736016 is 61063781.

It can be written as a sum of positive squares in 5 ways, for example, as 18490000 + 246016 = 4300^2 + 496^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18736019) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 456956 + ... + 456996.

Almost surely, 2^18736016 is an apocalyptic number.

18736016 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 18736016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20142591).

18736016 is an abundant number, since it is smaller than the sum of its proper divisors (21549166).

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

18736016 is an frugal number, since it uses more digits than its factorization.

18736016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101 (or 56 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 18736016 is about 4328.5119845046. The cubic root of 18736016 is about 265.5985804589.

Adding to 18736016 its reverse (61063781), we get a palindrome (79799797).

The spelling of 18736016 in words is "eighteen million, seven hundred thirty-six thousand, sixteen".