780814040 has 16 divisors (see below), whose sum is σ = 1756831680. Its totient is φ = 312325600.

The previous prime is 780814037. The next prime is 780814079. The reversal of 780814040 is 40418087.

It is a super-2 number, since 2×780814040² = 1219341130122243200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 780813988 and 780814006.

It is a congruent number.

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, 9760136 + ... + 9760215.

It is an arithmetic number, because the mean of its divisors is an integer number (109801980).

Almost surely, 2^780814040 is an apocalyptic number.

It is an amenable number.

780814040 is an abundant number, since it is smaller than the sum of its proper divisors (976017640).

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

780814040 is a wasteful number, since it uses less digits than its factorization.

780814040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19520362 (or 19520358 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 780814040 is about 27943.0499409066. The cubic root of 780814040 is about 920.8365264774.

The spelling of 780814040 in words is "seven hundred eighty million, eight hundred fourteen thousand, forty".