28861134 has 32 divisors (see below), whose sum is σ = 59076864. Its totient is φ = 9397440.

The previous prime is 28861117. The next prime is 28861141. The reversal of 28861134 is 43116882.

It is a junction number, because it is equal to n+sod(n) for n = 28861095 and 28861104.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 57127 + ... + 57629.

It is an arithmetic number, because the mean of its divisors is an integer number (1846152).

Almost surely, 2^28861134 is an apocalyptic number.

28861134 is an abundant number, since it is smaller than the sum of its proper divisors (30215730).

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

28861134 is a wasteful number, since it uses less digits than its factorization.

28861134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712.

The product of its digits is 9216, while the sum is 33.

The square root of 28861134 is about 5372.2559507157. The cubic root of 28861134 is about 306.7405065314.

The spelling of 28861134 in words is "twenty-eight million, eight hundred sixty-one thousand, one hundred thirty-four".