72786543 has 16 divisors (see below), whose sum is σ = 102076416. Its totient is φ = 46069920.

The previous prime is 72786523. The next prime is 72786557. The reversal of 72786543 is 34568727.

It is not a de Polignac number, because 72786543 - 2⁹ = 72786031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72786495 and 72786504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72786523) 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, 2455 + ... + 12312.

It is an arithmetic number, because the mean of its divisors is an integer number (6379776).

Almost surely, 2^72786543 is an apocalyptic number.

72786543 is a deficient number, since it is larger than the sum of its proper divisors (29289873).

72786543 is a wasteful number, since it uses less digits than its factorization.

72786543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14854.

The product of its digits is 282240, while the sum is 42.

The square root of 72786543 is about 8531.5029742713. The cubic root of 72786543 is about 417.5261661442.

The spelling of 72786543 in words is "seventy-two million, seven hundred eighty-six thousand, five hundred forty-three".