779883228 has 144 divisors (see below), whose sum is σ = 2189547360. Its totient is φ = 241864704.

The previous prime is 779883199. The next prime is 779883239. The reversal of 779883228 is 822388977.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1800900 + ... + 1801332.

It is an arithmetic number, because the mean of its divisors is an integer number (15205190).

Almost surely, 2^779883228 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 779883228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1094773680).

779883228 is an abundant number, since it is smaller than the sum of its proper divisors (1409664132).

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

779883228 is a wasteful number, since it uses less digits than its factorization.

779883228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578 (or 564 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The square root of 779883228 is about 27926.3894551372. The cubic root of 779883228 is about 920.4704698300.

The spelling of 779883228 in words is "seven hundred seventy-nine million, eight hundred eighty-three thousand, two hundred twenty-eight".