77347296 has 144 divisors (see below), whose sum is σ = 240969456. Its totient is φ = 23390208.

The previous prime is 77347267. The next prime is 77347301. The reversal of 77347296 is 69274377.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 273171 + ... + 273453.

It is an arithmetic number, because the mean of its divisors is an integer number (1673399).

Almost surely, 2^77347296 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77347296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120484728).

77347296 is an abundant number, since it is smaller than the sum of its proper divisors (163622160).

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

77347296 is a wasteful number, since it uses less digits than its factorization.

77347296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385 (or 374 counting only the distinct ones).

The product of its digits is 444528, while the sum is 45.

The square root of 77347296 is about 8794.7311499556. The cubic root of 77347296 is about 426.0707414095.

The spelling of 77347296 in words is "seventy-seven million, three hundred forty-seven thousand, two hundred ninety-six".