786438880 has 48 divisors (see below), whose sum is σ = 1955756880. Its totient is φ = 298017792.

The previous prime is 786438833. The next prime is 786438889. The reversal of 786438880 is 88834687.

It is a super-2 number, since 2×786438880² = 1236972223951308800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (786438889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126309 + ... + 132388.

It is an arithmetic number, because the mean of its divisors is an integer number (40744935).

Almost surely, 2^786438880 is an apocalyptic number.

It is an amenable number.

786438880 is an abundant number, since it is smaller than the sum of its proper divisors (1169318000).

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

786438880 is a wasteful number, since it uses less digits than its factorization.

786438880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258731 (or 258723 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 52.

The square root of 786438880 is about 28043.5176110273. The cubic root of 786438880 is about 923.0424166873.

The spelling of 786438880 in words is "seven hundred eighty-six million, four hundred thirty-eight thousand, eight hundred eighty".