72786286 has 4 divisors (see below), whose sum is σ = 109179432. Its totient is φ = 36393142.

The previous prime is 72786281. The next prime is 72786293. The reversal of 72786286 is 68268727.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72786281) 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, 18196570 + ... + 18196573.

It is an arithmetic number, because the mean of its divisors is an integer number (27294858).

Almost surely, 2^72786286 is an apocalyptic number.

72786286 is a deficient number, since it is larger than the sum of its proper divisors (36393146).

72786286 is a wasteful number, since it uses less digits than its factorization.

72786286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36393145.

The product of its digits is 451584, while the sum is 46.

The square root of 72786286 is about 8531.4879124336. The cubic root of 72786286 is about 417.5256747331.

The spelling of 72786286 in words is "seventy-two million, seven hundred eighty-six thousand, two hundred eighty-six".