75243228 has 12 divisors (see below), whose sum is σ = 175567560. Its totient is φ = 25081072.

The previous prime is 75243167. The next prime is 75243229. The reversal of 75243228 is 82234257.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75243229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3135123 + ... + 3135146.

It is an arithmetic number, because the mean of its divisors is an integer number (14630630).

Almost surely, 2^75243228 is an apocalyptic number.

It is an amenable number.

75243228 is an abundant number, since it is smaller than the sum of its proper divisors (100324332).

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

75243228 is a wasteful number, since it uses less digits than its factorization.

75243228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6270276 (or 6270274 counting only the distinct ones).

The product of its digits is 26880, while the sum is 33.

The square root of 75243228 is about 8674.2854460757. The cubic root of 75243228 is about 422.1717217019.

The spelling of 75243228 in words is "seventy-five million, two hundred forty-three thousand, two hundred twenty-eight".