780499104 has 192 divisors, whose sum is σ = 2705052672. Its totient is φ = 190771200.

The previous prime is 780499099. The next prime is 780499123. The reversal of 780499104 is 401994087.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 122559 + ... + 128769.

It is an arithmetic number, because the mean of its divisors is an integer number (14088816).

Almost surely, 2^780499104 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 780499104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1352526336).

780499104 is an abundant number, since it is smaller than the sum of its proper divisors (1924553568).

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

780499104 is a wasteful number, since it uses less digits than its factorization.

780499104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6259 (or 6251 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 780499104 is about 27937.4140535591. The cubic root of 780499104 is about 920.7127054578.

It can be divided in two parts, 78049 and 9104, that added together give a triangular number (87153 = T₄₁₇).

The spelling of 780499104 in words is "seven hundred eighty million, four hundred ninety-nine thousand, one hundred four".