28908166 has 16 divisors (see below), whose sum is σ = 49625856. Its totient is φ = 12371976.

The previous prime is 28908091. The next prime is 28908193. The reversal of 28908166 is 66180982.

It is a super-2 number, since 2×28908166² = 1671364122967112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19255 + ... + 20701.

It is an arithmetic number, because the mean of its divisors is an integer number (3101616).

Almost surely, 2^28908166 is an apocalyptic number.

28908166 is a deficient number, since it is larger than the sum of its proper divisors (20717690).

28908166 is a wasteful number, since it uses less digits than its factorization.

28908166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2883.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 28908166 is about 5376.6314733297. The cubic root of 28908166 is about 306.9070371797.

The spelling of 28908166 in words is "twenty-eight million, nine hundred eight thousand, one hundred sixty-six".