72175736 has 8 divisors (see below), whose sum is σ = 135329520. Its totient is φ = 36087864.

The previous prime is 72175723. The next prime is 72175739. The reversal of 72175736 is 63757127.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 72175736.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72175739) by changing a digit.

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 as a sum of consecutive naturals, namely, 4510976 + ... + 4510991.

It is an arithmetic number, because the mean of its divisors is an integer number (16916190).

Almost surely, 2^72175736 is an apocalyptic number.

It is an amenable number.

72175736 is a deficient number, since it is larger than the sum of its proper divisors (63153784).

72175736 is a wasteful number, since it uses less digits than its factorization.

72175736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9021973 (or 9021969 counting only the distinct ones).

The product of its digits is 61740, while the sum is 38.

The square root of 72175736 is about 8495.6304062736. The cubic root of 72175736 is about 416.3549577661.

The spelling of 72175736 in words is "seventy-two million, one hundred seventy-five thousand, seven hundred thirty-six".