7491130220 has 24 divisors (see below), whose sum is σ = 17978712864. Its totient is φ = 2568387456.

The previous prime is 7491130219. The next prime is 7491130277. The reversal of 7491130220 is 220311947.

It is a super-2 number, since 2×7491130220² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26753897 + ... + 26754176.

It is an arithmetic number, because the mean of its divisors is an integer number (749113036).

Almost surely, 2^7491130220 is an apocalyptic number.

7491130220 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7491130220 is an abundant number, since it is smaller than the sum of its proper divisors (10487582644).

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

7491130220 is a wasteful number, since it uses less digits than its factorization.

7491130220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53508089 (or 53508087 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 7491130220 is about 86551.3155301524. The cubic root of 7491130220 is about 1956.6618714212.

The spelling of 7491130220 in words is "seven billion, four hundred ninety-one million, one hundred thirty thousand, two hundred twenty".