7449407520 has 96 divisors (see below), whose sum is σ = 24700697280. Its totient is φ = 1881953280.

The previous prime is 7449407519. The next prime is 7449407557. The reversal of 7449407520 is 257049447.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 399291 + ... + 417530.

It is an arithmetic number, because the mean of its divisors is an integer number (257298930).

Almost surely, 2^7449407520 is an apocalyptic number.

It is an amenable number.

7449407520 is an abundant number, since it is smaller than the sum of its proper divisors (17251289760).

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

7449407520 is a wasteful number, since it uses less digits than its factorization.

7449407520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816858 (or 816850 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 42.

The square root of 7449407520 is about 86309.9502954323. The cubic root of 7449407520 is about 1953.0224895941.

The spelling of 7449407520 in words is "seven billion, four hundred forty-nine million, four hundred seven thousand, five hundred twenty".