72285512 has 32 divisors (see below), whose sum is σ = 146959680. Its totient is φ = 33134400.

The previous prime is 72285497. The next prime is 72285539. The reversal of 72285512 is 21558227.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13403 + ... + 18005.

It is an arithmetic number, because the mean of its divisors is an integer number (4592490).

Almost surely, 2^72285512 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 72285512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73479840).

72285512 is an abundant number, since it is smaller than the sum of its proper divisors (74674168).

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

72285512 is a wasteful number, since it uses less digits than its factorization.

72285512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4773 (or 4769 counting only the distinct ones).

The product of its digits is 11200, while the sum is 32.

The square root of 72285512 is about 8502.0886845528. The cubic root of 72285512 is about 416.5659364680.

The spelling of 72285512 in words is "seventy-two million, two hundred eighty-five thousand, five hundred twelve".