72943016 has 8 divisors (see below), whose sum is σ = 136768170. Its totient is φ = 36471504.

The previous prime is 72942983. The next prime is 72943019. The reversal of 72943016 is 61034927.

It can be written as a sum of positive squares in only one way, i.e., 68724100 + 4218916 = 8290^2 + 2054^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (72943019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4558931 + ... + 4558946.

Almost surely, 2^72943016 is an apocalyptic number.

It is an amenable number.

72943016 is a deficient number, since it is larger than the sum of its proper divisors (63825154).

72943016 is a wasteful number, since it uses less digits than its factorization.

72943016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9117883 (or 9117879 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 72943016 is about 8540.6683579214. The cubic root of 72943016 is about 417.8251445423.

The spelling of 72943016 in words is "seventy-two million, nine hundred forty-three thousand, sixteen".