7407998520 has 128 divisors (see below), whose sum is σ = 24171013440. Its totient is φ = 1805414400.

The previous prime is 7407998513. The next prime is 7407998527. The reversal of 7407998520 is 258997047.

It is an interprime number because it is at equal distance from previous prime (7407998513) and next prime (7407998527).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7407998527) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134052 + ... + 181068.

Almost surely, 2^7407998520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7407998520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12085506720).

7407998520 is an abundant number, since it is smaller than the sum of its proper divisors (16763014920).

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

7407998520 is a wasteful number, since it uses less digits than its factorization.

7407998520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47145 (or 47141 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 51.

The square root of 7407998520 is about 86069.7305677205. The cubic root of 7407998520 is about 1949.3970101405.

The spelling of 7407998520 in words is "seven billion, four hundred seven million, nine hundred ninety-eight thousand, five hundred twenty".