7981082 has 4 divisors (see below), whose sum is σ = 11971626. Its totient is φ = 3990540.

The previous prime is 7981067. The next prime is 7981087. The reversal of 7981082 is 2801897.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7890481 + 90601 = 2809^2 + 301^2 .

It is not an unprimeable number, because it can be changed into a prime (7981087) by changing a digit.

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 as a sum of consecutive naturals, namely, 1995269 + ... + 1995272.

Almost surely, 2^7981082 is an apocalyptic number.

7981082 is a deficient number, since it is larger than the sum of its proper divisors (3990544).

7981082 is a wasteful number, since it uses less digits than its factorization.

7981082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3990543.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 7981082 is about 2825.0808837978. The cubic root of 7981082 is about 199.8422255689.

The spelling of 7981082 in words is "seven million, nine hundred eighty-one thousand, eighty-two".