72578208 has 24 divisors (see below), whose sum is σ = 190518048. Its totient is φ = 24192704.

The previous prime is 72578197. The next prime is 72578221. The reversal of 72578208 is 80287527.

It is a tau number, because it is divible by the number of its divisors (24).

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, 377916 + ... + 378107.

It is an arithmetic number, because the mean of its divisors is an integer number (7938252).

Almost surely, 2^72578208 is an apocalyptic number.

It is an amenable number.

72578208 is an abundant number, since it is smaller than the sum of its proper divisors (117939840).

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

72578208 is a wasteful number, since it uses less digits than its factorization.

72578208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756036 (or 756028 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 39.

The square root of 72578208 is about 8519.2844769969. The cubic root of 72578208 is about 417.1274274288.

The spelling of 72578208 in words is "seventy-two million, five hundred seventy-eight thousand, two hundred eight".