8113428 has 18 divisors (see below), whose sum is σ = 20509034. Its totient is φ = 2704464.

The previous prime is 8113421. The next prime is 8113447. The reversal of 8113428 is 8243118.

8113428 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7387524 + 725904 = 2718^2 + 852^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×8113428² = 131655427822368, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8113421) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 112651 + ... + 112722.

Almost surely, 2^8113428 is an apocalyptic number.

It is an amenable number.

8113428 is an abundant number, since it is smaller than the sum of its proper divisors (12395606).

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

8113428 is a wasteful number, since it uses less digits than its factorization.

8113428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225383 (or 225378 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 8113428 is about 2848.4079763966. The cubic root of 8113428 is about 200.9408008628.

The spelling of 8113428 in words is "eight million, one hundred thirteen thousand, four hundred twenty-eight".