28618066 has 16 divisors (see below), whose sum is σ = 45763200. Its totient is φ = 13382928.

The previous prime is 28618061. The next prime is 28618081. The reversal of 28618066 is 66081682.

It is not an unprimeable number, because it can be changed into a prime (28618061) 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 7 ways as a sum of consecutive naturals, for example, 1765 + ... + 7768.

It is an arithmetic number, because the mean of its divisors is an integer number (2860200).

Almost surely, 2^28618066 is an apocalyptic number.

28618066 is a deficient number, since it is larger than the sum of its proper divisors (17145134).

28618066 is a wasteful number, since it uses less digits than its factorization.

28618066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9633.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 28618066 is about 5349.5855914267. The cubic root of 28618066 is about 305.8769565253.

The spelling of 28618066 in words is "twenty-eight million, six hundred eighteen thousand, sixty-six".