72873743 has 4 divisors (see below), whose sum is σ = 73447680. Its totient is φ = 72299808.

The previous prime is 72873739. The next prime is 72873763. The reversal of 72873743 is 34737827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34737827 = 2467 ⋅14081.

It is a cyclic number.

It is not a de Polignac number, because 72873743 - 2² = 72873739 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 72873743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72873733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286778 + ... + 287031.

It is an arithmetic number, because the mean of its divisors is an integer number (18361920).

Almost surely, 2^72873743 is an apocalyptic number.

72873743 is a deficient number, since it is larger than the sum of its proper divisors (573937).

72873743 is a wasteful number, since it uses less digits than its factorization.

72873743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573936.

The product of its digits is 197568, while the sum is 41.

The square root of 72873743 is about 8536.6119157427. The cubic root of 72873743 is about 417.6928350115.

The spelling of 72873743 in words is "seventy-two million, eight hundred seventy-three thousand, seven hundred forty-three".