75030816 has 48 divisors (see below), whose sum is σ = 225094464. Its totient is φ = 21437184.

The previous prime is 75030811. The next prime is 75030817. The reversal of 75030816 is 61803057.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (75030811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55155 + ... + 56498.

It is an arithmetic number, because the mean of its divisors is an integer number (4689468).

Almost surely, 2^75030816 is an apocalyptic number.

It is an amenable number.

75030816 is an abundant number, since it is smaller than the sum of its proper divisors (150063648).

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

75030816 is a wasteful number, since it uses less digits than its factorization.

75030816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111673 (or 111665 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 75030816 is about 8662.0330177159. The cubic root of 75030816 is about 421.7740830110.

The spelling of 75030816 in words is "seventy-five million, thirty thousand, eight hundred sixteen".