77219082 has 48 divisors (see below), whose sum is σ = 176510880. Its totient is φ = 25294032.

The previous prime is 77219071. The next prime is 77219089. The reversal of 77219082 is 28091277.

It is not an unprimeable number, because it can be changed into a prime (77219089) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27328 + ... + 30020.

It is an arithmetic number, because the mean of its divisors is an integer number (3677310).

Almost surely, 2^77219082 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77219082, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88255440).

77219082 is an abundant number, since it is smaller than the sum of its proper divisors (99291798).

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

77219082 is a wasteful number, since it uses less digits than its factorization.

77219082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2769 (or 2757 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 77219082 is about 8787.4388760321. The cubic root of 77219082 is about 425.8351871870.

The spelling of 77219082 in words is "seventy-seven million, two hundred nineteen thousand, eighty-two".