77826476 has 48 divisors (see below), whose sum is σ = 177500736. Its totient is φ = 28975104.

The previous prime is 77826473. The next prime is 77826521. The reversal of 77826476 is 67462877.

It is a self number, because there is not a number n which added to its sum of digits gives 77826476.

It is not an unprimeable number, because it can be changed into a prime (77826473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101 + ... + 12476.

It is an arithmetic number, because the mean of its divisors is an integer number (3697932).

Almost surely, 2^77826476 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 77826476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88750368).

77826476 is an abundant number, since it is smaller than the sum of its proper divisors (99674260).

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

77826476 is a wasteful number, since it uses less digits than its factorization.

77826476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12618 (or 12616 counting only the distinct ones).

The product of its digits is 790272, while the sum is 47.

The square root of 77826476 is about 8821.9315345337. The cubic root of 77826476 is about 426.9487915452.

The spelling of 77826476 in words is "seventy-seven million, eight hundred twenty-six thousand, four hundred seventy-six".