72794542 has 4 divisors (see below), whose sum is σ = 109191816. Its totient is φ = 36397270.

The previous prime is 72794537. The next prime is 72794543. The reversal of 72794542 is 24549727.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24549727 = 659 ⋅37253.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 72794495 and 72794504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72794543) 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 as a sum of consecutive naturals, namely, 18198634 + ... + 18198637.

It is an arithmetic number, because the mean of its divisors is an integer number (27297954).

Almost surely, 2^72794542 is an apocalyptic number.

72794542 is a deficient number, since it is larger than the sum of its proper divisors (36397274).

72794542 is a wasteful number, since it uses less digits than its factorization.

72794542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36397273.

The product of its digits is 141120, while the sum is 40.

The square root of 72794542 is about 8531.9717533522. The cubic root of 72794542 is about 417.5414604982.

The spelling of 72794542 in words is "seventy-two million, seven hundred ninety-four thousand, five hundred forty-two".