75052720 has 40 divisors (see below), whose sum is σ = 177466320. Its totient is φ = 29510400.

The previous prime is 75052711. The next prime is 75052723. The reversal of 75052720 is 2725057.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (75052723) 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, 3231 + ... + 12670.

It is an arithmetic number, because the mean of its divisors is an integer number (4436658).

Almost surely, 2^75052720 is an apocalyptic number.

It is an amenable number.

75052720 is an abundant number, since it is smaller than the sum of its proper divisors (102413600).

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

75052720 is a wasteful number, since it uses less digits than its factorization.

75052720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15973 (or 15967 counting only the distinct ones).

The product of its (nonzero) digits is 4900, while the sum is 28.

The square root of 75052720 is about 8663.2972937560. The cubic root of 75052720 is about 421.8151223294.

Adding to 75052720 its reverse (2725057), we get a palindrome (77777777).

The spelling of 75052720 in words is "seventy-five million, fifty-two thousand, seven hundred twenty".