7381986 has 8 divisors (see below), whose sum is σ = 14763984. Its totient is φ = 2460660.

The previous prime is 7381967. The next prime is 7382003. The reversal of 7381986 is 6891837.

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

7381986 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 615160 + ... + 615171.

It is an arithmetic number, because the mean of its divisors is an integer number (1845498).

Almost surely, 2^7381986 is an apocalyptic number.

7381986 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.

7381986 is a wasteful number, since it uses less digits than its factorization.

7381986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1230336.

The product of its digits is 72576, while the sum is 42.

The square root of 7381986 is about 2716.9810452044. The cubic root of 7381986 is about 194.7112623533.

The spelling of 7381986 in words is "seven million, three hundred eighty-one thousand, nine hundred eighty-six".