786371820 has 96 divisors (see below), whose sum is σ = 2376272640. Its totient is φ = 193155840.

The previous prime is 786371819. The next prime is 786371851. The reversal of 786371820 is 28173687.

It is a super-2 number, since 2×786371820² = 1236761278580224800, which contains 22 as substring.

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, 538251 + ... + 539709.

It is an arithmetic number, because the mean of its divisors is an integer number (24752840).

Almost surely, 2^786371820 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 786371820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1188136320).

786371820 is an abundant number, since it is smaller than the sum of its proper divisors (1589900820).

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

786371820 is a wasteful number, since it uses less digits than its factorization.

786371820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2175 (or 2173 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 786371820 is about 28042.3219438049. The cubic root of 786371820 is about 923.0161798597.

The spelling of 786371820 in words is "seven hundred eighty-six million, three hundred seventy-one thousand, eight hundred twenty".