18227066 has 32 divisors (see below), whose sum is σ = 32489856. Its totient is φ = 7560000.

The previous prime is 18227003. The next prime is 18227081. The reversal of 18227066 is 66072281.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28571 + ... + 29201.

It is an arithmetic number, because the mean of its divisors is an integer number (1015308).

Almost surely, 2^18227066 is an apocalyptic number.

18227066 is a deficient number, since it is larger than the sum of its proper divisors (14262790).

18227066 is a wasteful number, since it uses less digits than its factorization.

18227066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 18227066 is about 4269.3168071718. The cubic root of 18227066 is about 263.1715401303.

It can be divided in two parts, 1822 and 7066, that added together give a palindrome (8888).

The spelling of 18227066 in words is "eighteen million, two hundred twenty-seven thousand, sixty-six".