784169056 has 144 divisors (see below), whose sum is σ = 1801820160. Its totient is φ = 335174400.

The previous prime is 784169053. The next prime is 784169069. The reversal of 784169056 is 650961487.

It is a super-2 number, since 2×784169056² = 1229842216775862272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 784168997 and 784169015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (784169053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5641435 + ... + 5641573.

It is an arithmetic number, because the mean of its divisors is an integer number (12512640).

Almost surely, 2^784169056 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 784169056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (900910080).

784169056 is an abundant number, since it is smaller than the sum of its proper divisors (1017651104).

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

784169056 is a wasteful number, since it uses less digits than its factorization.

784169056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 784169056 is about 28003.0186944194. The cubic root of 784169056 is about 922.1535310224.

The spelling of 784169056 in words is "seven hundred eighty-four million, one hundred sixty-nine thousand, fifty-six".