7841380 has 12 divisors (see below), whose sum is σ = 16466940. Its totient is φ = 3136544.

The previous prime is 7841377. The next prime is 7841381. The reversal of 7841380 is 831487.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5875776 + 1965604 = 2424^2 + 1402^2 .

It is a super-2 number, since 2×7841380² = 122974480608800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7841381) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 196015 + ... + 196054.

It is an arithmetic number, because the mean of its divisors is an integer number (1372245).

Almost surely, 2^7841380 is an apocalyptic number.

It is an amenable number.

7841380 is an abundant number, since it is smaller than the sum of its proper divisors (8625560).

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

7841380 is a wasteful number, since it uses less digits than its factorization.

7841380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392078 (or 392076 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 7841380 is about 2800.2464177283. The cubic root of 7841380 is about 198.6693329272.

The spelling of 7841380 in words is "seven million, eight hundred forty-one thousand, three hundred eighty".