72196782 has 16 divisors (see below), whose sum is σ = 165021312. Its totient is φ = 20627640.

The previous prime is 72196771. The next prime is 72196801. The reversal of 72196782 is 28769127.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1718971 = 72196782 / (7 + 2 + 1 + 9 + 6 + 7 + 8 + 2).

It is a congruent number.

It is an unprimeable number.

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, 859444 + ... + 859527.

It is an arithmetic number, because the mean of its divisors is an integer number (10313832).

Almost surely, 2^72196782 is an apocalyptic number.

72196782 is an abundant number, since it is smaller than the sum of its proper divisors (92824530).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72196782 is a wasteful number, since it uses less digits than its factorization.

72196782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718983.

The product of its digits is 84672, while the sum is 42.

The square root of 72196782 is about 8496.8689527378. The cubic root of 72196782 is about 416.3954226802.

The spelling of 72196782 in words is "seventy-two million, one hundred ninety-six thousand, seven hundred eighty-two".