72971343 has 24 divisors (see below), whose sum is σ = 111337200. Its totient is φ = 45926784.

The previous prime is 72971333. The next prime is 72971369. The reversal of 72971343 is 34317927.

It is not a de Polignac number, because 72971343 - 2¹⁰ = 72970319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72971298 and 72971307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72971333) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65971 + ... + 67067.

It is an arithmetic number, because the mean of its divisors is an integer number (4639050).

Almost surely, 2^72971343 is an apocalyptic number.

72971343 is a deficient number, since it is larger than the sum of its proper divisors (38365857).

72971343 is a wasteful number, since it uses less digits than its factorization.

72971343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511 (or 1508 counting only the distinct ones).

The product of its digits is 31752, while the sum is 36.

The square root of 72971343 is about 8542.3265566238. The cubic root of 72971343 is about 417.8792242049.

The spelling of 72971343 in words is "seventy-two million, nine hundred seventy-one thousand, three hundred forty-three".