72455972 has 12 divisors (see below), whose sum is σ = 134256780. Its totient is φ = 34096896.

The previous prime is 72455909. The next prime is 72456001. The reversal of 72455972 is 27955427.

It can be written as a sum of positive squares in 2 ways, for example, as 28153636 + 44302336 = 5306^2 + 6656^2 .

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, 532697 + ... + 532832.

It is an arithmetic number, because the mean of its divisors is an integer number (11188065).

Almost surely, 2^72455972 is an apocalyptic number.

It is an amenable number.

72455972 is a deficient number, since it is larger than the sum of its proper divisors (61800808).

72455972 is a wasteful number, since it uses less digits than its factorization.

72455972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065550 (or 1065548 counting only the distinct ones).

The product of its digits is 176400, while the sum is 41.

The square root of 72455972 is about 8512.1073771423. The cubic root of 72455972 is about 416.8931209198.

The spelling of 72455972 in words is "seventy-two million, four hundred fifty-five thousand, nine hundred seventy-two".