72443236 has 12 divisors (see below), whose sum is σ = 126904960. Its totient is φ = 36184680.

The previous prime is 72443227. The next prime is 72443251. The reversal of 72443236 is 63234427.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 72443198 and 72443207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4560 + ... + 12871.

Almost surely, 2^72443236 is an apocalyptic number.

It is an amenable number.

72443236 is a deficient number, since it is larger than the sum of its proper divisors (54461724).

72443236 is a wasteful number, since it uses less digits than its factorization.

72443236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18474 (or 18472 counting only the distinct ones).

The product of its digits is 24192, while the sum is 31.

The square root of 72443236 is about 8511.3592334010. The cubic root of 72443236 is about 416.8686929269.

The spelling of 72443236 in words is "seventy-two million, four hundred forty-three thousand, two hundred thirty-six".