72285236 has 12 divisors (see below), whose sum is σ = 129441312. Its totient is φ = 35302008.

The previous prime is 72285233. The next prime is 72285247. The reversal of 72285236 is 63258227.

It is a junction number, because it is equal to n+sod(n) for n = 72285196 and 72285205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72285233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209960 + ... + 210303.

It is an arithmetic number, because the mean of its divisors is an integer number (10786776).

Almost surely, 2^72285236 is an apocalyptic number.

It is an amenable number.

72285236 is a deficient number, since it is larger than the sum of its proper divisors (57156076).

72285236 is a wasteful number, since it uses less digits than its factorization.

72285236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420310 (or 420308 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 72285236 is about 8502.0724532316. The cubic root of 72285236 is about 416.5654062910.

It can be divided in two parts, 722 and 85236, that added together give a palindrome (85958).

The spelling of 72285236 in words is "seventy-two million, two hundred eighty-five thousand, two hundred thirty-six".