780419772 has 144 divisors (see below), whose sum is σ = 2280724992. Its totient is φ = 231310080.

The previous prime is 780419747. The next prime is 780419779. The reversal of 780419772 is 277914087.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780419779) 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 47 ways as a sum of consecutive naturals, for example, 501748 + ... + 503300.

It is an arithmetic number, because the mean of its divisors is an integer number (15838368).

Almost surely, 2^780419772 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 780419772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1140362496).

780419772 is an abundant number, since it is smaller than the sum of its proper divisors (1500305220).

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

780419772 is a wasteful number, since it uses less digits than its factorization.

780419772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1630 (or 1616 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 45.

The square root of 780419772 is about 27935.9942010303. The cubic root of 780419772 is about 920.6815098400.

The spelling of 780419772 in words is "seven hundred eighty million, four hundred nineteen thousand, seven hundred seventy-two".