72771208 has 16 divisors (see below), whose sum is σ = 141151500. Its totient is φ = 35130816.

The previous prime is 72771199. The next prime is 72771211. The reversal of 72771208 is 80217727.

It can be written as a sum of positive squares in 2 ways, for example, as 72284004 + 487204 = 8502^2 + 698^2 .

It is a plaindrome in base 16.

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, 156603 + ... + 157066.

Almost surely, 2^72771208 is an apocalyptic number.

It is an amenable number.

72771208 is a deficient number, since it is larger than the sum of its proper divisors (68380292).

72771208 is a wasteful number, since it uses less digits than its factorization.

72771208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313704 (or 313700 counting only the distinct ones).

The product of its (nonzero) digits is 10976, while the sum is 34.

The square root of 72771208 is about 8530.6041990002. The cubic root of 72771208 is about 417.4968419807.

The spelling of 72771208 in words is "seventy-two million, seven hundred seventy-one thousand, two hundred eight".