780904004 has 12 divisors (see below), whose sum is σ = 1425998784. Its totient is φ = 373475784.

The previous prime is 780903989. The next prime is 780904021. The reversal of 780904004 is 400409087.

It is a happy number.

It is a super-2 number, since 2×780904004² = 1219622126926464032, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4243952 + ... + 4244135.

It is an arithmetic number, because the mean of its divisors is an integer number (118833232).

Almost surely, 2^780904004 is an apocalyptic number.

It is an amenable number.

780904004 is a deficient number, since it is larger than the sum of its proper divisors (645094780).

780904004 is a wasteful number, since it uses less digits than its factorization.

780904004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8488114 (or 8488112 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 780904004 is about 27944.6596687095. The cubic root of 780904004 is about 920.8718908329.

The spelling of 780904004 in words is "seven hundred eighty million, nine hundred four thousand, four".