28315134 has 24 divisors (see below), whose sum is σ = 61796280. Its totient is φ = 9369648.

The previous prime is 28315117. The next prime is 28315141. The reversal of 28315134 is 43151382.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28315098 and 28315107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3157 + ... + 8160.

It is an arithmetic number, because the mean of its divisors is an integer number (2574845).

Almost surely, 2^28315134 is an apocalyptic number.

28315134 is an abundant number, since it is smaller than the sum of its proper divisors (33481146).

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

28315134 is a wasteful number, since it uses less digits than its factorization.

28315134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11464 (or 11461 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 28315134 is about 5321.1966699230. The cubic root of 28315134 is about 304.7938551472.

The spelling of 28315134 in words is "twenty-eight million, three hundred fifteen thousand, one hundred thirty-four".