784638480 has 40 divisors (see below), whose sum is σ = 2432380032. Its totient is φ = 209236864.

The previous prime is 784638473. The next prime is 784638509. The reversal of 784638480 is 84836487.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1634424 + ... + 1634903.

Almost surely, 2^784638480 is an apocalyptic number.

It is an amenable number.

784638480 is an abundant number, since it is smaller than the sum of its proper divisors (1647741552).

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

784638480 is a wasteful number, since it uses less digits than its factorization.

784638480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3269343 (or 3269337 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 48.

The square root of 784638480 is about 28011.3991082202. The cubic root of 784638480 is about 922.3375026828.

The spelling of 784638480 in words is "seven hundred eighty-four million, six hundred thirty-eight thousand, four hundred eighty".