780338043 has 20 divisors (see below), whose sum is σ = 1216375248. Its totient is φ = 497605680.

The previous prime is 780338033. The next prime is 780338051. The reversal of 780338043 is 340833087.

780338043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 780338043 - 2¹⁷ = 780206971 is a prime.

It is a super-2 number, since 2×780338043² = 1217854922706139698, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 780337989 and 780338007.

It is not an unprimeable number, because it can be changed into a prime (780338023) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 207568 + ... + 211293.

Almost surely, 2^780338043 is an apocalyptic number.

780338043 is a deficient number, since it is larger than the sum of its proper divisors (436037205).

780338043 is a wasteful number, since it uses less digits than its factorization.

780338043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418896 (or 418887 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 780338043 is about 27934.5313724788. The cubic root of 780338043 is about 920.6493694422.

The spelling of 780338043 in words is "seven hundred eighty million, three hundred thirty-eight thousand, forty-three".