77868248 has 32 divisors (see below), whose sum is σ = 157615200. Its totient is φ = 35954688.

The previous prime is 77868233. The next prime is 77868253. The reversal of 77868248 is 84286877.

It is a junction number, because it is equal to n+sod(n) for n = 77868196 and 77868205.

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, 1961 + ... + 12632.

It is an arithmetic number, because the mean of its divisors is an integer number (4925475).

Almost surely, 2^77868248 is an apocalyptic number.

It is an amenable number.

77868248 is an abundant number, since it is smaller than the sum of its proper divisors (79746952).

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

77868248 is a wasteful number, since it uses less digits than its factorization.

77868248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14651 (or 14647 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 50.

The square root of 77868248 is about 8824.2987256779. The cubic root of 77868248 is about 427.0251636489.

The spelling of 77868248 in words is "seventy-seven million, eight hundred sixty-eight thousand, two hundred forty-eight".