72250128 has 60 divisors (see below), whose sum is σ = 203402160. Its totient is φ = 23940288.

The previous prime is 72250121. The next prime is 72250133. The reversal of 72250128 is 82105227.

It is not an unprimeable number, because it can be changed into a prime (72250121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24375 + ... + 27177.

It is an arithmetic number, because the mean of its divisors is an integer number (3390036).

Almost surely, 2^72250128 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 72250128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101701080).

72250128 is an abundant number, since it is smaller than the sum of its proper divisors (131152032).

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

72250128 is a wasteful number, since it uses less digits than its factorization.

72250128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2996 (or 2987 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 72250128 is about 8500.0075294084. The cubic root of 72250128 is about 416.4979552345.

The spelling of 72250128 in words is "seventy-two million, two hundred fifty thousand, one hundred twenty-eight".