72972708 has 12 divisors (see below), whose sum is σ = 170269680. Its totient is φ = 24324232.

The previous prime is 72972707. The next prime is 72972709. The reversal of 72972708 is 80727927.

It is an interprime number because it is at equal distance from previous prime (72972707) and next prime (72972709).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×72972708² = 10650032225706528, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72972708.

It is not an unprimeable number, because it can be changed into a prime (72972701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3040518 + ... + 3040541.

It is an arithmetic number, because the mean of its divisors is an integer number (14189140).

Almost surely, 2^72972708 is an apocalyptic number.

It is an amenable number.

72972708 is an abundant number, since it is smaller than the sum of its proper divisors (97296972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72972708 is a wasteful number, since it uses less digits than its factorization.

72972708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6081066 (or 6081064 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 42.

The square root of 72972708 is about 8542.4064525168. The cubic root of 72972708 is about 417.8818298012.

It can be divided in two parts, 729 and 72708, that added together give a palindrome (73437).

The spelling of 72972708 in words is "seventy-two million, nine hundred seventy-two thousand, seven hundred eight".