72285237 has 16 divisors (see below), whose sum is σ = 108448000. Its totient is φ = 47578752.

The previous prime is 72285233. The next prime is 72285247. The reversal of 72285237 is 73258227.

It is a happy number.

It is not a de Polignac number, because 72285237 - 2² = 72285233 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 14812 + ... + 19077.

It is an arithmetic number, because the mean of its divisors is an integer number (6778000).

Almost surely, 2^72285237 is an apocalyptic number.

It is an amenable number.

72285237 is a deficient number, since it is larger than the sum of its proper divisors (36162763).

72285237 is a wasteful number, since it uses less digits than its factorization.

72285237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33977 (or 33971 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 72285237 is about 8502.0725120408. The cubic root of 72285237 is about 416.5654082119.

The spelling of 72285237 in words is "seventy-two million, two hundred eighty-five thousand, two hundred thirty-seven".