75480820 has 24 divisors (see below), whose sum is σ = 158860800. Its totient is φ = 30125472.

The previous prime is 75480809. The next prime is 75480869. The reversal of 75480820 is 2808457.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5641 + ... + 13519.

It is an arithmetic number, because the mean of its divisors is an integer number (6619200).

Almost surely, 2^75480820 is an apocalyptic number.

It is an amenable number.

75480820 is an abundant number, since it is smaller than the sum of its proper divisors (83379980).

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

75480820 is a wasteful number, since it uses less digits than its factorization.

75480820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8367 (or 8365 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 75480820 is about 8687.9698434099. The cubic root of 75480820 is about 422.6156120712.

The spelling of 75480820 in words is "seventy-five million, four hundred eighty thousand, eight hundred twenty".