18726912 has 90 divisors (see below), whose sum is σ = 54524288. Its totient is φ = 6193152.

The previous prime is 18726901. The next prime is 18726923. The reversal of 18726912 is 21962781.

It is an interprime number because it is at equal distance from previous prime (18726901) and next prime (18726923).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 147393 + ... + 147519.

Almost surely, 2^18726912 is an apocalyptic number.

18726912 is a gapful number since it is divisible by the number (12) 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 18726912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27262144).

18726912 is an abundant number, since it is smaller than the sum of its proper divisors (35797376).

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

18726912 is an equidigital number, since it uses as much as digits as its factorization.

18726912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161 (or 132 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 18726912 is about 4327.4602251205. The cubic root of 18726912 is about 265.5555545700. Note that the first 5 decimals are identical.

The spelling of 18726912 in words is "eighteen million, seven hundred twenty-six thousand, nine hundred twelve".