28127130 has 16 divisors (see below), whose sum is σ = 67505184. Its totient is φ = 7500560.

The previous prime is 28127111. The next prime is 28127159. The reversal of 28127130 is 3172182.

It is a super-2 number, since 2×28127130² = 1582270884073800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28127130.

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, 468756 + ... + 468815.

It is an arithmetic number, because the mean of its divisors is an integer number (4219074).

Almost surely, 2^28127130 is an apocalyptic number.

28127130 is an abundant number, since it is smaller than the sum of its proper divisors (39378054).

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

28127130 is a wasteful number, since it uses less digits than its factorization.

28127130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937581.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 28127130 is about 5303.5016734229. The cubic root of 28127130 is about 304.1177766754.

The spelling of 28127130 in words is "twenty-eight million, one hundred twenty-seven thousand, one hundred thirty".