75228540 has 96 divisors (see below), whose sum is σ = 217728000. Its totient is φ = 19398912.

The previous prime is 75228539. The next prime is 75228541. The reversal of 75228540 is 4582257.

It is an interprime number because it is at equal distance from previous prime (75228539) and next prime (75228541).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75228541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 279526 + ... + 279794.

It is an arithmetic number, because the mean of its divisors is an integer number (2268000).

Almost surely, 2^75228540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75228540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108864000).

75228540 is an abundant number, since it is smaller than the sum of its proper divisors (142499460).

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

75228540 is a wasteful number, since it uses less digits than its factorization.

75228540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419 (or 417 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 75228540 is about 8673.4387644117. The cubic root of 75228540 is about 422.1442496315.

It can be divided in two parts, 752 and 28540, that added together give a palindrome (29292).

The spelling of 75228540 in words is "seventy-five million, two hundred twenty-eight thousand, five hundred forty".