780347404 has 48 divisors (see below), whose sum is σ = 1504903680. Its totient is φ = 352408320.

The previous prime is 780347401. The next prime is 780347429. The reversal of 780347404 is 404743087.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (780347401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 756369 + ... + 757399.

It is an arithmetic number, because the mean of its divisors is an integer number (31352160).

Almost surely, 2^780347404 is an apocalyptic number.

It is an amenable number.

780347404 is a deficient number, since it is larger than the sum of its proper divisors (724556276).

780347404 is a wasteful number, since it uses less digits than its factorization.

780347404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510 (or 1508 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 37.

The square root of 780347404 is about 27934.6989244559. The cubic root of 780347404 is about 920.6530508229.

The spelling of 780347404 in words is "seven hundred eighty million, three hundred forty-seven thousand, four hundred four".