75273620 has 24 divisors (see below), whose sum is σ = 167373864. Its totient is φ = 28338176.

The previous prime is 75273593. The next prime is 75273623. The reversal of 75273620 is 2637257.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 25542916 + 49730704 = 5054^2 + 7052^2 .

It is a super-2 number, since 2×75273620² = 11332235735808800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75273623) 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, 110357 + ... + 111036.

It is an arithmetic number, because the mean of its divisors is an integer number (6973911).

Almost surely, 2^75273620 is an apocalyptic number.

It is an amenable number.

75273620 is an abundant number, since it is smaller than the sum of its proper divisors (92100244).

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

75273620 is a wasteful number, since it uses less digits than its factorization.

75273620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221419 (or 221417 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 75273620 is about 8676.0371137980. The cubic root of 75273620 is about 422.2285547937.

The spelling of 75273620 in words is "seventy-five million, two hundred seventy-three thousand, six hundred twenty".