75100720 has 40 divisors (see below), whose sum is σ = 180635760. Its totient is φ = 29003520.

The previous prime is 75100717. The next prime is 75100723. The reversal of 75100720 is 2700157.

It is an interprime number because it is at equal distance from previous prime (75100717) and next prime (75100723).

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

It is a junction number, because it is equal to n+sod(n) for n = 75100691 and 75100700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75100723) 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, 13866 + ... + 18505.

It is an arithmetic number, because the mean of its divisors is an integer number (4515894).

Almost surely, 2^75100720 is an apocalyptic number.

It is an amenable number.

75100720 is an abundant number, since it is smaller than the sum of its proper divisors (105535040).

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

75100720 is a wasteful number, since it uses less digits than its factorization.

75100720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32413 (or 32407 counting only the distinct ones).

The product of its (nonzero) digits is 490, while the sum is 22.

The square root of 75100720 is about 8666.0671587520. The cubic root of 75100720 is about 421.9050271814.

Adding to 75100720 its reverse (2700157), we get a palindrome (77800877).

The spelling of 75100720 in words is "seventy-five million, one hundred thousand, seven hundred twenty".