7981456 has 20 divisors (see below), whose sum is σ = 17673472. Its totient is φ = 3420576.

The previous prime is 7981453. The next prime is 7981471. The reversal of 7981456 is 6541897.

It is a d-powerful number, because it can be written as 7⁸ + 9² + 8 + 1 + 4⁹ + 5⁹ + 6⁴ .

It is not an unprimeable number, because it can be changed into a prime (7981453) 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 in 3 ways as a sum of consecutive naturals, for example, 35520 + ... + 35743.

Almost surely, 2^7981456 is an apocalyptic number.

It is an amenable number.

7981456 is an abundant number, since it is smaller than the sum of its proper divisors (9692016).

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

7981456 is a wasteful number, since it uses less digits than its factorization.

7981456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71278 (or 71272 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 7981456 is about 2825.1470758175. The cubic root of 7981456 is about 199.8453471099.

The spelling of 7981456 in words is "seven million, nine hundred eighty-one thousand, four hundred fifty-six".