28129166 has 8 divisors (see below), whose sum is σ = 45439464. Its totient is φ = 12982680.

The previous prime is 28129151. The next prime is 28129187. The reversal of 28129166 is 66192182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 540920 + ... + 540971.

It is an arithmetic number, because the mean of its divisors is an integer number (5679933).

Almost surely, 2^28129166 is an apocalyptic number.

28129166 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28129166 is a deficient number, since it is larger than the sum of its proper divisors (17310298).

28129166 is a wasteful number, since it uses less digits than its factorization.

28129166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081906.

The product of its digits is 10368, while the sum is 35.

The square root of 28129166 is about 5303.6936186020. The cubic root of 28129166 is about 304.1251144172.

The spelling of 28129166 in words is "twenty-eight million, one hundred twenty-nine thousand, one hundred sixty-six".