72481480 has 16 divisors (see below), whose sum is σ = 163083420. Its totient is φ = 28992576.

The previous prime is 72481463. The next prime is 72481499. The reversal of 72481480 is 8418427.

It can be written as a sum of positive squares in 2 ways, for example, as 70593604 + 1887876 = 8402^2 + 1374^2 .

It is an unprimeable number.

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, 905979 + ... + 906058.

Almost surely, 2^72481480 is an apocalyptic number.

It is an amenable number.

72481480 is an abundant number, since it is smaller than the sum of its proper divisors (90601940).

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

72481480 is a wasteful number, since it uses less digits than its factorization.

72481480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1812048 (or 1812044 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 72481480 is about 8513.6055816558. The cubic root of 72481480 is about 416.9420373481.

The spelling of 72481480 in words is "seventy-two million, four hundred eighty-one thousand, four hundred eighty".