72791547 has 8 divisors (see below), whose sum is σ = 98504256. Its totient is φ = 47803272.

The previous prime is 72791533. The next prime is 72791557. The reversal of 72791547 is 74519727.

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

It is not a de Polignac number, because 72791547 - 2¹⁹ = 72267259 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72791499 and 72791508.

It is not an unprimeable number, because it can be changed into a prime (72791507) 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 7 ways as a sum of consecutive naturals, for example, 180873 + ... + 181274.

It is an arithmetic number, because the mean of its divisors is an integer number (12313032).

Almost surely, 2^72791547 is an apocalyptic number.

72791547 is a deficient number, since it is larger than the sum of its proper divisors (25712709).

72791547 is a wasteful number, since it uses less digits than its factorization.

72791547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362217.

The product of its digits is 123480, while the sum is 42.

The square root of 72791547 is about 8531.7962352602. The cubic root of 72791547 is about 417.5357340899.

The spelling of 72791547 in words is "seventy-two million, seven hundred ninety-one thousand, five hundred forty-seven".