72106448 has 10 divisors (see below), whose sum is σ = 139706274. Its totient is φ = 36053216.

The previous prime is 72106439. The next prime is 72106457. The reversal of 72106448 is 84460127.

It is an interprime number because it is at equal distance from previous prime (72106439) and next prime (72106457).

It can be written as a sum of positive squares in only one way, i.e., 71707024 + 399424 = 8468^2 + 632^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2253311 + ... + 2253342.

Almost surely, 2^72106448 is an apocalyptic number.

It is an amenable number.

72106448 is a deficient number, since it is larger than the sum of its proper divisors (67599826).

72106448 is a wasteful number, since it uses less digits than its factorization.

72106448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4506661 (or 4506655 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 72106448 is about 8491.5515661156. The cubic root of 72106448 is about 416.2216828816.

The spelling of 72106448 in words is "seventy-two million, one hundred six thousand, four hundred forty-eight".