72944971 has 12 divisors (see below), whose sum is σ = 84401800. Its totient is φ = 62821440.

The previous prime is 72944957. The next prime is 72944981. The reversal of 72944971 is 17944927.

It is not a de Polignac number, because 72944971 - 2⁵ = 72944939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72944941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13566 + ... + 18163.

Almost surely, 2^72944971 is an apocalyptic number.

72944971 is a deficient number, since it is larger than the sum of its proper divisors (11456829).

72944971 is a wasteful number, since it uses less digits than its factorization.

72944971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31770 (or 31759 counting only the distinct ones).

The product of its digits is 127008, while the sum is 43.

The square root of 72944971 is about 8540.7828095556. The cubic root of 72944971 is about 417.8288773230.

The spelling of 72944971 in words is "seventy-two million, nine hundred forty-four thousand, nine hundred seventy-one".