72793643 has 16 divisors (see below), whose sum is σ = 86619456. Its totient is φ = 60487680.

The previous prime is 72793639. The next prime is 72793649. The reversal of 72793643 is 34639727.

It is a cyclic number.

It is not a de Polignac number, because 72793643 - 2² = 72793639 is a prime.

It is a super-2 number, since 2×72793643² = 10597828922422898, which contains 22 as substring.

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 72793643.

It is not an unprimeable number, because it can be changed into a prime (72793649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2078 + ... + 12243.

It is an arithmetic number, because the mean of its divisors is an integer number (5413716).

Almost surely, 2^72793643 is an apocalyptic number.

72793643 is a deficient number, since it is larger than the sum of its proper divisors (13825813).

72793643 is a wasteful number, since it uses less digits than its factorization.

72793643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14374.

The product of its digits is 190512, while the sum is 41.

The square root of 72793643 is about 8531.9190690020. The cubic root of 72793643 is about 417.5397416362.

The spelling of 72793643 in words is "seventy-two million, seven hundred ninety-three thousand, six hundred forty-three".