72160189 has 12 divisors (see below), whose sum is σ = 78122556. Its totient is φ = 66398592.

The previous prime is 72160169. The next prime is 72160201. The reversal of 72160189 is 98106127.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 54140164 + 18020025 = 7358^2 + 4245^2 .

It is not a de Polignac number, because 72160189 - 2⁹ = 72159677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72160129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 254842 + ... + 255124.

It is an arithmetic number, because the mean of its divisors is an integer number (6510213).

Almost surely, 2^72160189 is an apocalyptic number.

It is an amenable number.

72160189 is a deficient number, since it is larger than the sum of its proper divisors (5962367).

72160189 is an equidigital number, since it uses as much as digits as its factorization.

72160189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636 (or 353 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 72160189 is about 8494.7153572089. The cubic root of 72160189 is about 416.3250606671.

The spelling of 72160189 in words is "seventy-two million, one hundred sixty thousand, one hundred eighty-nine".