786378780 has 120 divisors (see below), whose sum is σ = 2691223920. Its totient is φ = 190632960.

The previous prime is 786378757. The next prime is 786378787. The reversal of 786378780 is 87873687.

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 (786378787) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4245 + ... + 39884.

It is an arithmetic number, because the mean of its divisors is an integer number (22426866).

Almost surely, 2^786378780 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 786378780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1345611960).

786378780 is an abundant number, since it is smaller than the sum of its proper divisors (1904845140).

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

786378780 is a wasteful number, since it uses less digits than its factorization.

786378780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44161 (or 44150 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 54.

The square root of 786378780 is about 28042.4460416705. The cubic root of 786378780 is about 923.0189029878.

The spelling of 786378780 in words is "seven hundred eighty-six million, three hundred seventy-eight thousand, seven hundred eighty".