72843216 has 20 divisors (see below), whose sum is σ = 188178432. Its totient is φ = 24281056.

The previous prime is 72843203. The next prime is 72843227. The reversal of 72843216 is 61234827.

It is a super-2 number, since 2×72843216² = 10612268234445312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 758736 + ... + 758831.

Almost surely, 2^72843216 is an apocalyptic number.

It is an amenable number.

72843216 is an abundant number, since it is smaller than the sum of its proper divisors (115335216).

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

72843216 is a wasteful number, since it uses less digits than its factorization.

72843216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1517578 (or 1517572 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 72843216 is about 8534.8237240145. The cubic root of 72843216 is about 417.6345026615.

The spelling of 72843216 in words is "seventy-two million, eight hundred forty-three thousand, two hundred sixteen".