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7422 = 231237

7422 has 8 divisors (see below), whose sum is σ = 14856. Its totient is φ = 2472.

The previous prime is 7417. The next prime is 7433. The reversal of 7422 is 2247.

It is a sphenic number, since it is the product of 3 distinct primes.

7422 is an admirable number.

It is a plaindrome in base 9 and base 13.

It is a nialpdrome in base 6 and base 10.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 7422.

It is an unprimeable number.

7422 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 613 + ... + 624.

It is an arithmetic number, because the mean of its divisors is an integer number (1857).

27422 is an apocalyptic number.

7422 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7428).

7422 is a wasteful number, since it uses less digits than its factorization.

7422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242.

The product of its digits is 112, while the sum is 15.

The square root of 7422 is about 86.1510301738. The cubic root of 7422 is about 19.5062438914.

Adding to 7422 its reverse (2247), we get a palindrome (9669).

The spelling of 7422 in words is "seven thousand, four hundred twenty-two", and thus it is an iban number.

Divisors: 1 2 3 6 1237 2474 3711 7422