18676266 has 32 divisors (see below), whose sum is σ = 43296768. Its totient is φ = 5260080.

The previous prime is 18676241. The next prime is 18676267. The reversal of 18676266 is 66267681.

It is a happy number.

18676266 is nontrivially palindromic in base 12.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (18676267) 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 15 ways as a sum of consecutive naturals, for example, 150 + ... + 6113.

It is an arithmetic number, because the mean of its divisors is an integer number (1353024).

Almost surely, 2^18676266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18676266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21648384).

18676266 is an abundant number, since it is smaller than the sum of its proper divisors (24620502).

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

18676266 is a wasteful number, since it uses less digits than its factorization.

18676266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6346.

The product of its digits is 145152, while the sum is 42.

The square root of 18676266 is about 4321.6045631224. The cubic root of 18676266 is about 265.3159445156.

The spelling of 18676266 in words is "eighteen million, six hundred seventy-six thousand, two hundred sixty-six".