780538488 has 64 divisors (see below), whose sum is σ = 2041459200. Its totient is φ = 248223360.

The previous prime is 780538483. The next prime is 780538489. The reversal of 780538488 is 884835087.

It is a super-2 number, since 2×780538488² = 1218480662498652288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 780538488.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780538483) 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 15 ways as a sum of consecutive naturals, for example, 240718 + ... + 243938.

It is an arithmetic number, because the mean of its divisors is an integer number (31897800).

Almost surely, 2^780538488 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 780538488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1020729600).

780538488 is an abundant number, since it is smaller than the sum of its proper divisors (1260920712).

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

780538488 is a wasteful number, since it uses less digits than its factorization.

780538488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3692 (or 3688 counting only the distinct ones).

The product of its (nonzero) digits is 1720320, while the sum is 51.

The square root of 780538488 is about 27938.1189058963. The cubic root of 780538488 is about 920.7281915911.

The spelling of 780538488 in words is "seven hundred eighty million, five hundred thirty-eight thousand, four hundred eighty-eight".