72910543 has 8 divisors (see below), whose sum is σ = 79224320. Its totient is φ = 66844440.

The previous prime is 72910531. The next prime is 72910559. The reversal of 72910543 is 34501927.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72910543 - 2⁵ = 72910511 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72911543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61305 + ... + 62482.

It is an arithmetic number, because the mean of its divisors is an integer number (9903040).

Almost surely, 2^72910543 is an apocalyptic number.

72910543 is a deficient number, since it is larger than the sum of its proper divisors (6313777).

72910543 is a wasteful number, since it uses less digits than its factorization.

72910543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123837.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 72910543 is about 8538.7670655663. The cubic root of 72910543 is about 417.7631324376.

The spelling of 72910543 in words is "seventy-two million, nine hundred ten thousand, five hundred forty-three".