7813480 has 32 divisors (see below), whose sum is σ = 17677800. Its totient is φ = 3108096.

The previous prime is 7813471. The next prime is 7813483. The reversal of 7813480 is 843187.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6180196 + 1633284 = 2486^2 + 1278^2 .

It is a super-2 number, since 2×7813480² = 122100939420800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7813483) 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 7 ways as a sum of consecutive naturals, for example, 8734 + ... + 9586.

Almost surely, 2^7813480 is an apocalyptic number.

It is an amenable number.

7813480 is an abundant number, since it is smaller than the sum of its proper divisors (9864320).

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

7813480 is a wasteful number, since it uses less digits than its factorization.

7813480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093 (or 1089 counting only the distinct ones).

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

The square root of 7813480 is about 2795.2602741069. The cubic root of 7813480 is about 198.4334279653.

The spelling of 7813480 in words is "seven million, eight hundred thirteen thousand, four hundred eighty".