72163948 has 12 divisors (see below), whose sum is σ = 130641840. Its totient is φ = 34837712.

The previous prime is 72163921. The next prime is 72163961. The reversal of 72163948 is 84936127.

It is a self number, because there is not a number n which added to its sum of digits gives 72163948.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310936 + ... + 311167.

It is an arithmetic number, because the mean of its divisors is an integer number (10886820).

Almost surely, 2^72163948 is an apocalyptic number.

It is an amenable number.

72163948 is a deficient number, since it is larger than the sum of its proper divisors (58477892).

72163948 is a wasteful number, since it uses less digits than its factorization.

72163948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622136 (or 622134 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 72163948 is about 8494.9366095339. The cubic root of 72163948 is about 416.3322896704.

The spelling of 72163948 in words is "seventy-two million, one hundred sixty-three thousand, nine hundred forty-eight".