72201528 has 48 divisors (see below), whose sum is σ = 223482480. Its totient is φ = 20628864.

The previous prime is 72201523. The next prime is 72201559. The reversal of 72201528 is 82510227.

It is a super-3 number, since 3×72201528³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72201523) 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 11 ways as a sum of consecutive naturals, for example, 71125 + ... + 72132.

It is an arithmetic number, because the mean of its divisors is an integer number (4655885).

Almost surely, 2^72201528 is an apocalyptic number.

It is an amenable number.

72201528 is an abundant number, since it is smaller than the sum of its proper divisors (151280952).

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

72201528 is a wasteful number, since it uses less digits than its factorization.

72201528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143276 (or 143269 counting only the distinct ones).

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

The square root of 72201528 is about 8497.1482274937. The cubic root of 72201528 is about 416.4045466758.

The spelling of 72201528 in words is "seventy-two million, two hundred one thousand, five hundred twenty-eight".