72071193 has 4 divisors (see below), whose sum is σ = 96094928. Its totient is φ = 48047460.

The previous prime is 72071191. The next prime is 72071201. The reversal of 72071193 is 39117027.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 72071193 - 2¹ = 72071191 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72071193.

It is not an unprimeable number, because it can be changed into a prime (72071191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12011863 + ... + 12011868.

It is an arithmetic number, because the mean of its divisors is an integer number (24023732).

Almost surely, 2^72071193 is an apocalyptic number.

It is an amenable number.

72071193 is a deficient number, since it is larger than the sum of its proper divisors (24023735).

72071193 is a wasteful number, since it uses less digits than its factorization.

72071193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24023734.

The product of its (nonzero) digits is 2646, while the sum is 30.

The square root of 72071193 is about 8489.4754254901. The cubic root of 72071193 is about 416.1538374115.

The spelling of 72071193 in words is "seventy-two million, seventy-one thousand, one hundred ninety-three".