781884468 has 96 divisors (see below), whose sum is σ = 2166595200. Its totient is φ = 242984448.

The previous prime is 781884463. The next prime is 781884469. The reversal of 781884468 is 864488187.

781884468 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×781884468² = 1222686642599286048, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (781884463) 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, 198171 + ... + 202077.

It is an arithmetic number, because the mean of its divisors is an integer number (22568700).

Almost surely, 2^781884468 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 781884468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1083297600).

781884468 is an abundant number, since it is smaller than the sum of its proper divisors (1384710732).

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

781884468 is a wasteful number, since it uses less digits than its factorization.

781884468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4046 (or 4038 counting only the distinct ones).

The product of its digits is 2752512, while the sum is 54.

The square root of 781884468 is about 27962.1971239744. The cubic root of 781884468 is about 921.2571298743.

The spelling of 781884468 in words is "seven hundred eighty-one million, eight hundred eighty-four thousand, four hundred sixty-eight".