785220380 has 48 divisors (see below), whose sum is σ = 1916490240. Its totient is φ = 264652608.

The previous prime is 785220379. The next prime is 785220383. The reversal of 785220380 is 83022587.

It is a happy number.

785220380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 785220380.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (785220383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39272 + ... + 55791.

It is an arithmetic number, because the mean of its divisors is an integer number (39926880).

Almost surely, 2^785220380 is an apocalyptic number.

785220380 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

785220380 is an abundant number, since it is smaller than the sum of its proper divisors (1131269860).

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

785220380 is a wasteful number, since it uses less digits than its factorization.

785220380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95138 (or 95136 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 785220380 is about 28021.7840260038. The cubic root of 785220380 is about 922.5654529147.

The spelling of 785220380 in words is "seven hundred eighty-five million, two hundred twenty thousand, three hundred eighty".