7890481 has 5 divisors (see below), whose sum is σ = 8042221. Its totient is φ = 7741604.

The previous prime is 7890479. The next prime is 7890503. The reversal of 7890481 is 1840987.

The square root of 7890481 is 2809.

It is a perfect power (a square, a biquadrate), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 1540081 + 6350400 = 1241^2 + 2520^2 .

It is not a de Polignac number, because 7890481 - 2¹ = 7890479 is a prime.

It is a super-2 number, since 2×7890481² = 124519380822722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7890481.

It is not an unprimeable number, because it can be changed into a prime (7890881) 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 4 ways as a sum of consecutive naturals, for example, 148851 + ... + 148903.

Almost surely, 2^7890481 is an apocalyptic number.

7890481 is the 2809-th square number.

7890481 is the 1405-th centered octagonal number.

It is an amenable number.

7890481 is a deficient number, since it is larger than the sum of its proper divisors (151740).

7890481 is an frugal number, since it uses more digits than its factorization.

7890481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 37.

The cubic root of 7890481 is about 199.0831449737.

The spelling of 7890481 in words is "seven million, eight hundred ninety thousand, four hundred eighty-one".