7342428 has 48 divisors (see below), whose sum is σ = 18385920. Its totient is φ = 2274624.

The previous prime is 7342421. The next prime is 7342441. The reversal of 7342428 is 8242437.

It is a super-2 number, since 2×7342428² = 107822497870368, which contains 22 as substring.

It is a d-powerful number, because it can be written as 7⁸ + 3⁷ + 4² + 2¹¹ + 4¹⁰ + 2¹⁹ + 8³ .

It is a junction number, because it is equal to n+sod(n) for n = 7342395 and 7342404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7342421) 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, 9853 + ... + 10571.

It is an arithmetic number, because the mean of its divisors is an integer number (383040).

Almost surely, 2^7342428 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 7342428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9192960).

7342428 is an abundant number, since it is smaller than the sum of its proper divisors (11043492).

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

7342428 is a wasteful number, since it uses less digits than its factorization.

7342428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786 (or 784 counting only the distinct ones).

The product of its digits is 10752, while the sum is 30.

The square root of 7342428 is about 2709.6914953551. The cubic root of 7342428 is about 194.3628381606.

Subtracting 7342428 from its reverse (8242437), we obtain a palindrome (900009).

The spelling of 7342428 in words is "seven million, three hundred forty-two thousand, four hundred twenty-eight".