780113428 has 24 divisors (see below), whose sum is σ = 1387418144. Its totient is φ = 383724000.

The previous prime is 780113407. The next prime is 780113429. The reversal of 780113428 is 824311087.

It is a happy number.

It is a super-2 number, since 2×780113428² = 1217153921091822368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 780113393 and 780113402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780113429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272203 + ... + 275053.

Almost surely, 2^780113428 is an apocalyptic number.

It is an amenable number.

780113428 is a deficient number, since it is larger than the sum of its proper divisors (607304716).

780113428 is a wasteful number, since it uses less digits than its factorization.

780113428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3943 (or 3941 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 780113428 is about 27930.5107006657. The cubic root of 780113428 is about 920.5610267449.

The spelling of 780113428 in words is "seven hundred eighty million, one hundred thirteen thousand, four hundred twenty-eight".