72047182 has 4 divisors (see below), whose sum is σ = 108070776. Its totient is φ = 36023590.

The previous prime is 72047167. The next prime is 72047197. The reversal of 72047182 is 28174027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28174027 = 7 ⋅4024861.

It is an interprime number because it is at equal distance from previous prime (72047167) and next prime (72047197).

It is a super-2 number, since 2×72047182² = 10381592868282248, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 as a sum of consecutive naturals, namely, 18011794 + ... + 18011797.

It is an arithmetic number, because the mean of its divisors is an integer number (27017694).

Almost surely, 2^72047182 is an apocalyptic number.

72047182 is a deficient number, since it is larger than the sum of its proper divisors (36023594).

72047182 is a wasteful number, since it uses less digits than its factorization.

72047182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36023593.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 72047182 is about 8488.0611449259. The cubic root of 72047182 is about 416.1076174668.

The spelling of 72047182 in words is "seventy-two million, forty-seven thousand, one hundred eighty-two".