72248872 has 8 divisors (see below), whose sum is σ = 135466650. Its totient is φ = 36124432.

The previous prime is 72248867. The next prime is 72248881. The reversal of 72248872 is 27884227.

It can be written as a sum of positive squares in only one way, i.e., 56040196 + 16208676 = 7486^2 + 4026^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4515547 + ... + 4515562.

Almost surely, 2^72248872 is an apocalyptic number.

It is an amenable number.

72248872 is a deficient number, since it is larger than the sum of its proper divisors (63217778).

72248872 is a wasteful number, since it uses less digits than its factorization.

72248872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9031115 (or 9031111 counting only the distinct ones).

The product of its digits is 100352, while the sum is 40.

The square root of 72248872 is about 8499.9336467998. The cubic root of 72248872 is about 416.4955417464.

It can be divided in two parts, 722 and 48872, that added together give a palindrome (49594).

The spelling of 72248872 in words is "seventy-two million, two hundred forty-eight thousand, eight hundred seventy-two".