72591782 has 16 divisors (see below), whose sum is σ = 112466880. Its totient is φ = 35120448.

The previous prime is 72591773. The next prime is 72591787. The reversal of 72591782 is 28719527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72591787) 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 in 7 ways as a sum of consecutive naturals, for example, 4028 + ... + 12704.

It is an arithmetic number, because the mean of its divisors is an integer number (7029180).

Almost surely, 2^72591782 is an apocalyptic number.

72591782 is a deficient number, since it is larger than the sum of its proper divisors (39875098).

72591782 is a wasteful number, since it uses less digits than its factorization.

72591782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8815.

The product of its digits is 70560, while the sum is 41.

The square root of 72591782 is about 8520.0811029004. The cubic root of 72591782 is about 417.1534303430.

The spelling of 72591782 in words is "seventy-two million, five hundred ninety-one thousand, seven hundred eighty-two".