72283536 has 160 divisors (see below), whose sum is σ = 228179840. Its totient is φ = 21772800.

The previous prime is 72283517. The next prime is 72283571. The reversal of 72283536 is 63538227.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 72283536.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 342471 + ... + 342681.

It is an arithmetic number, because the mean of its divisors is an integer number (1426124).

Almost surely, 2^72283536 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 72283536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114089920).

72283536 is an abundant number, since it is smaller than the sum of its proper divisors (155896304).

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

72283536 is a wasteful number, since it uses less digits than its factorization.

72283536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302 (or 290 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 72283536 is about 8501.9724770197. The cubic root of 72283536 is about 416.5621406783.

The spelling of 72283536 in words is "seventy-two million, two hundred eighty-three thousand, five hundred thirty-six".