780375240 has 96 divisors (see below), whose sum is σ = 2543935680. Its totient is φ = 207467136.

The previous prime is 780375209. The next prime is 780375247. The reversal of 780375240 is 42573087.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 780375195 and 780375204.

It is not an unprimeable number, because it can be changed into a prime (780375247) 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 23 ways as a sum of consecutive naturals, for example, 121797 + ... + 128043.

It is an arithmetic number, because the mean of its divisors is an integer number (26499330).

Almost surely, 2^780375240 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 780375240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1271967840).

780375240 is an abundant number, since it is smaller than the sum of its proper divisors (1763560440).

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

780375240 is a wasteful number, since it uses less digits than its factorization.

780375240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6611 (or 6604 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 780375240 is about 27935.1971534120. The cubic root of 780375240 is about 920.6639976539.

The spelling of 780375240 in words is "seven hundred eighty million, three hundred seventy-five thousand, two hundred forty".