75323720 has 32 divisors (see below), whose sum is σ = 171072000. Its totient is φ = 29846208.

The previous prime is 75323671. The next prime is 75323723. The reversal of 75323720 is 2732357.

It is not an unprimeable number, because it can be changed into a prime (75323723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4520 + ... + 13079.

It is an arithmetic number, because the mean of its divisors is an integer number (5346000).

Almost surely, 2^75323720 is an apocalyptic number.

It is an amenable number.

75323720 is an abundant number, since it is smaller than the sum of its proper divisors (95748280).

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

75323720 is a wasteful number, since it uses less digits than its factorization.

75323720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17717 (or 17713 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 29.

The square root of 75323720 is about 8678.9238964286. The cubic root of 75323720 is about 422.3222084944.

The spelling of 75323720 in words is "seventy-five million, three hundred twenty-three thousand, seven hundred twenty".