780102720 has 168 divisors, whose sum is σ = 2729301120. Its totient is φ = 204456960.

The previous prime is 780102691. The next prime is 780102721. The reversal of 780102720 is 27201087.

It is not an unprimeable number, because it can be changed into a prime (780102721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 167625 + ... + 172215.

It is an arithmetic number, because the mean of its divisors is an integer number (16245840).

Almost surely, 2^780102720 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 780102720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1364650560).

780102720 is an abundant number, since it is smaller than the sum of its proper divisors (1949198400).

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

780102720 is a wasteful number, since it uses less digits than its factorization.

780102720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4673 (or 4660 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 780102720 is about 27930.3190099934. The cubic root of 780102720 is about 920.5568147879.

The spelling of 780102720 in words is "seven hundred eighty million, one hundred two thousand, seven hundred twenty".