72540488 has 8 divisors (see below), whose sum is σ = 136013430. Its totient is φ = 36270240.

The previous prime is 72540473. The next prime is 72540491. The reversal of 72540488 is 88404527.

It can be written as a sum of positive squares in only one way, i.e., 69588964 + 2951524 = 8342^2 + 1718^2 .

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, 4533773 + ... + 4533788.

Almost surely, 2^72540488 is an apocalyptic number.

It is an amenable number.

72540488 is a deficient number, since it is larger than the sum of its proper divisors (63472942).

72540488 is a wasteful number, since it uses less digits than its factorization.

72540488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9067567 (or 9067563 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 38.

The square root of 72540488 is about 8517.0703883436. The cubic root of 72540488 is about 417.0551524144.

The spelling of 72540488 in words is "seventy-two million, five hundred forty thousand, four hundred eighty-eight".