77877448 has 64 divisors (see below), whose sum is σ = 168220800. Its totient is φ = 33454080.

The previous prime is 77877439. The next prime is 77877451. The reversal of 77877448 is 84477877.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 77877395 and 77877404.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220440 + ... + 220792.

It is an arithmetic number, because the mean of its divisors is an integer number (2628450).

Almost surely, 2^77877448 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 77877448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84110400).

77877448 is an abundant number, since it is smaller than the sum of its proper divisors (90343352).

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

77877448 is a wasteful number, since it uses less digits than its factorization.

77877448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502 (or 498 counting only the distinct ones).

The product of its digits is 2458624, while the sum is 52.

The square root of 77877448 is about 8824.8199981643. The cubic root of 77877448 is about 427.0419804170.

The spelling of 77877448 in words is "seventy-seven million, eight hundred seventy-seven thousand, four hundred forty-eight".