77485212 has 36 divisors (see below), whose sum is σ = 223846896. Its totient is φ = 22138560.

The previous prime is 77485171. The next prime is 77485223. The reversal of 77485212 is 21258477.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 153489 + ... + 153992.

Almost surely, 2^77485212 is an apocalyptic number.

It is an amenable number.

77485212 is an abundant number, since it is smaller than the sum of its proper divisors (146361684).

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

77485212 is a wasteful number, since it uses less digits than its factorization.

77485212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307498 (or 307493 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 77485212 is about 8802.5684887992. The cubic root of 77485212 is about 426.3238296850.

The spelling of 77485212 in words is "seventy-seven million, four hundred eighty-five thousand, two hundred twelve".