72854843 has 4 divisors (see below), whose sum is σ = 77140440. Its totient is φ = 68569248.

The previous prime is 72854839. The next prime is 72854863. The reversal of 72854843 is 34845827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34845827 = 103 ⋅338309.

It is a cyclic number.

It is not a de Polignac number, because 72854843 - 2² = 72854839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72854843.

It is not an unprimeable number, because it can be changed into a prime (72854863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2142773 + ... + 2142806.

It is an arithmetic number, because the mean of its divisors is an integer number (19285110).

Almost surely, 2^72854843 is an apocalyptic number.

72854843 is a deficient number, since it is larger than the sum of its proper divisors (4285597).

72854843 is a wasteful number, since it uses less digits than its factorization.

72854843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4285596.

The product of its digits is 215040, while the sum is 41.

The square root of 72854843 is about 8535.5048474007. The cubic root of 72854843 is about 417.6567219717.

The spelling of 72854843 in words is "seventy-two million, eight hundred fifty-four thousand, eight hundred forty-three".