7113428 has 18 divisors (see below), whose sum is σ = 14481306. Its totient is φ = 3048528.

The previous prime is 7113383. The next prime is 7113437. The reversal of 7113428 is 8243117.

It can be written as a sum of positive squares in only one way, i.e., 3952144 + 3161284 = 1988^2 + 1778^2 .

It is a super-3 number, since 3×7113428³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 7113397 and 7113406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17951 + ... + 18342.

It is an arithmetic number, because the mean of its divisors is an integer number (804517).

Almost surely, 2^7113428 is an apocalyptic number.

It is an amenable number.

7113428 is an abundant number, since it is smaller than the sum of its proper divisors (7367878).

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

7113428 is a wasteful number, since it uses less digits than its factorization.

7113428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36311 (or 36302 counting only the distinct ones).

The product of its digits is 1344, while the sum is 26.

The square root of 7113428 is about 2667.1010479545. The cubic root of 7113428 is about 192.3208250149.

The spelling of 7113428 in words is "seven million, one hundred thirteen thousand, four hundred twenty-eight".