828778770460 has 96 divisors (see below), whose sum is σ = 1853087144832. Its totient is φ = 310275194880.

The previous prime is 828778770437. The next prime is 828778770461. The reversal of 828778770460 is 64077877828.

It is a super-2 number, since 2×828778770460² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 828778770392 and 828778770401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (828778770461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60874614 + ... + 60888226.

It is an arithmetic number, because the mean of its divisors is an integer number (19302991092).

Almost surely, 2^828778770460 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 828778770460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (926543572416).

828778770460 is an abundant number, since it is smaller than the sum of its proper divisors (1024308374372).

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

828778770460 is a wasteful number, since it uses less digits than its factorization.

828778770460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14623 (or 14621 counting only the distinct ones).

The product of its (nonzero) digits is 59006976, while the sum is 64.

The spelling of 828778770460 in words is "eight hundred twenty-eight billion, seven hundred seventy-eight million, seven hundred seventy thousand, four hundred sixty".