7481490440 has 32 divisors (see below), whose sum is σ = 16982331480. Its totient is φ = 2966111232.

The previous prime is 7481490427. The next prime is 7481490449. The reversal of 7481490440 is 440941847.

It can be written as a sum of positive squares in 4 ways, for example, as 5261761444 + 2219728996 = 72538^2 + 47114^2 .

It is a super-2 number, since 2×7481490440² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7481490449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 823079 + ... + 832118.

Almost surely, 2^7481490440 is an apocalyptic number.

It is an amenable number.

7481490440 is an abundant number, since it is smaller than the sum of its proper divisors (9500841040).

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

7481490440 is a wasteful number, since it uses less digits than its factorization.

7481490440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1655321 (or 1655317 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 7481490440 is about 86495.6093683373. The cubic root of 7481490440 is about 1955.8222167975.

The spelling of 7481490440 in words is "seven billion, four hundred eighty-one million, four hundred ninety thousand, four hundred forty".