7505720448 has 32 divisors (see below), whose sum is σ = 19937070960. Its totient is φ = 2501906688.

The previous prime is 7505720441. The next prime is 7505720449. The reversal of 7505720448 is 8440275057.

It is a tau number, because it is divible by the number of its divisors (32).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (7505720441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9772690 + ... + 9773457.

Almost surely, 2^7505720448 is an apocalyptic number.

It is an amenable number.

7505720448 is an abundant number, since it is smaller than the sum of its proper divisors (12431350512).

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

7505720448 is a wasteful number, since it uses less digits than its factorization.

7505720448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19546164 (or 19546152 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 42.

The square root of 7505720448 is about 86635.5611051259. The cubic root of 7505720448 is about 1957.9313562617.

The spelling of 7505720448 in words is "seven billion, five hundred five million, seven hundred twenty thousand, four hundred forty-eight".