828618780 has 96 divisors (see below), whose sum is σ = 2539369728. Its totient is φ = 200217600.

The previous prime is 828618773. The next prime is 828618799. The reversal of 828618780 is 87816828.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 216564 + ... + 220356.

It is an arithmetic number, because the mean of its divisors is an integer number (26451768).

Almost surely, 2^828618780 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 828618780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1269684864).

828618780 is an abundant number, since it is smaller than the sum of its proper divisors (1710750948).

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

828618780 is a wasteful number, since it uses less digits than its factorization.

828618780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4147 (or 4145 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 48.

The square root of 828618780 is about 28785.7391775858. The cubic root of 828618780 is about 939.2580458767.

The spelling of 828618780 in words is "eight hundred twenty-eight million, six hundred eighteen thousand, seven hundred eighty".