72255782 has 4 divisors (see below), whose sum is σ = 108383676. Its totient is φ = 36127890.

The previous prime is 72255769. The next prime is 72255847. The reversal of 72255782 is 28755227.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18063944 + ... + 18063947.

It is an arithmetic number, because the mean of its divisors is an integer number (27095919).

Almost surely, 2^72255782 is an apocalyptic number.

72255782 is a deficient number, since it is larger than the sum of its proper divisors (36127894).

72255782 is a wasteful number, since it uses less digits than its factorization.

72255782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36127893.

The product of its digits is 78400, while the sum is 38.

The square root of 72255782 is about 8500.3401108426. The cubic root of 72255782 is about 416.5088194275.

It can be divided in two parts, 72255 and 782, that added together give a palindrome (73037).

The spelling of 72255782 in words is "seventy-two million, two hundred fifty-five thousand, seven hundred eighty-two".