72127144 has 16 divisors (see below), whose sum is σ = 135328500. Its totient is φ = 36039552.

The previous prime is 72127123. The next prime is 72127151. The reversal of 72127144 is 44172127.

It can be written as a sum of positive squares in 2 ways, for example, as 61434244 + 10692900 = 7838^2 + 3270^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22132 + ... + 25180.

Almost surely, 2^72127144 is an apocalyptic number.

It is an amenable number.

72127144 is a deficient number, since it is larger than the sum of its proper divisors (63201356).

72127144 is a wasteful number, since it uses less digits than its factorization.

72127144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6012 (or 6008 counting only the distinct ones).

The product of its digits is 3136, while the sum is 28.

The square root of 72127144 is about 8492.7701016806. The cubic root of 72127144 is about 416.2615004022.

The spelling of 72127144 in words is "seventy-two million, one hundred twenty-seven thousand, one hundred forty-four".