18467216 has 20 divisors (see below), whose sum is σ = 36111900. Its totient is φ = 9148032.

The previous prime is 18467213. The next prime is 18467243. The reversal of 18467216 is 61276481.

It can be written as a sum of positive squares in 2 ways, for example, as 7311616 + 11155600 = 2704^2 + 3340^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18467213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3551 + ... + 7038.

It is an arithmetic number, because the mean of its divisors is an integer number (1805595).

Almost surely, 2^18467216 is an apocalyptic number.

18467216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18467216 is a deficient number, since it is larger than the sum of its proper divisors (17644684).

18467216 is a wasteful number, since it uses less digits than its factorization.

18467216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10706 (or 10700 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 18467216 is about 4297.3498810313. The cubic root of 18467216 is about 264.3223030215.

The spelling of 18467216 in words is "eighteen million, four hundred sixty-seven thousand, two hundred sixteen".