28113534 has 16 divisors (see below), whose sum is σ = 62474640. Its totient is φ = 9371160.

The previous prime is 28113523. The next prime is 28113539. The reversal of 28113534 is 43531182.

It is a happy number.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 28113498 and 28113507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28113539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260257 + ... + 260364.

It is an arithmetic number, because the mean of its divisors is an integer number (3904665).

Almost surely, 2^28113534 is an apocalyptic number.

28113534 is an abundant number, since it is smaller than the sum of its proper divisors (34361106).

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

28113534 is a wasteful number, since it uses less digits than its factorization.

28113534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520632 (or 520626 counting only the distinct ones).

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

The square root of 28113534 is about 5302.2197238515. The cubic root of 28113534 is about 304.0687676262.

The spelling of 28113534 in words is "twenty-eight million, one hundred thirteen thousand, five hundred thirty-four".