7135428 has 48 divisors (see below), whose sum is σ = 17611776. Its totient is φ = 2244000.

The previous prime is 7135423. The next prime is 7135441. The reversal of 7135428 is 8245317.

It is a junction number, because it is equal to n+sod(n) for n = 7135395 and 7135404.

It is not an unprimeable number, because it can be changed into a prime (7135423) 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, 28303 + ... + 28553.

It is an arithmetic number, because the mean of its divisors is an integer number (366912).

Almost surely, 2^7135428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7135428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8805888).

7135428 is an abundant number, since it is smaller than the sum of its proper divisors (10476348).

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

7135428 is a wasteful number, since it uses less digits than its factorization.

With its successor (7135429) it forms an eRAP, since the sums of their prime factors are consecutive (384 and 385).

7135428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384 (or 382 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 7135428 is about 2671.2221921809. Note that the first 3 decimals coincide. The cubic root of 7135428 is about 192.5188872231.

The spelling of 7135428 in words is "seven million, one hundred thirty-five thousand, four hundred twenty-eight".