28116534 has 32 divisors (see below), whose sum is σ = 59503104. Its totient is φ = 8838720.

The previous prime is 28116533. The next prime is 28116563. The reversal of 28116534 is 43561182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28116533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8679 + ... + 11469.

It is an arithmetic number, because the mean of its divisors is an integer number (1859472).

Almost surely, 2^28116534 is an apocalyptic number.

28116534 is an abundant number, since it is smaller than the sum of its proper divisors (31386570).

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

28116534 is a wasteful number, since it uses less digits than its factorization.

28116534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2892.

The product of its digits is 5760, while the sum is 30.

The square root of 28116534 is about 5302.5026166896. The cubic root of 28116534 is about 304.0795829849.

The spelling of 28116534 in words is "twenty-eight million, one hundred sixteen thousand, five hundred thirty-four".