7842318 has 32 divisors (see below), whose sum is σ = 17667072. Its totient is φ = 2299200.

The previous prime is 7842299. The next prime is 7842323. The reversal of 7842318 is 8132487.

It is a super-2 number, since 2×7842318² = 123003903226248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 130 + ... + 3962.

It is an arithmetic number, because the mean of its divisors is an integer number (552096).

Almost surely, 2^7842318 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7842318, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8833536).

7842318 is an abundant number, since it is smaller than the sum of its proper divisors (9824754).

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

7842318 is a wasteful number, since it uses less digits than its factorization.

7842318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3880.

The product of its digits is 10752, while the sum is 33.

The square root of 7842318 is about 2800.4138979801. The cubic root of 7842318 is about 198.6772543392.

The spelling of 7842318 in words is "seven million, eight hundred forty-two thousand, three hundred eighteen".