77241216 has 64 divisors (see below), whose sum is σ = 220968720. Its totient is φ = 23764992.

The previous prime is 77241209. The next prime is 77241221. The reversal of 77241216 is 61214277.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 2745 + ... + 12728.

Almost surely, 2^77241216 is an apocalyptic number.

It is an amenable number.

77241216 is an abundant number, since it is smaller than the sum of its proper divisors (143727504).

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

77241216 is a wasteful number, since it uses less digits than its factorization.

77241216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15503 (or 15491 counting only the distinct ones).

The product of its digits is 4704, while the sum is 30.

The square root of 77241216 is about 8788.6981971166. The cubic root of 77241216 is about 425.8758702900.

The spelling of 77241216 in words is "seventy-seven million, two hundred forty-one thousand, two hundred sixteen".