788139420 has 24 divisors (see below), whose sum is σ = 2206790544. Its totient is φ = 210170496.

The previous prime is 788139403. The next prime is 788139421. The reversal of 788139420 is 24931887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (788139421) 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, 6567769 + ... + 6567888.

It is an arithmetic number, because the mean of its divisors is an integer number (91949606).

Almost surely, 2^788139420 is an apocalyptic number.

It is an amenable number.

788139420 is an abundant number, since it is smaller than the sum of its proper divisors (1418651124).

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

788139420 is a wasteful number, since it uses less digits than its factorization.

788139420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13135669 (or 13135667 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 788139420 is about 28073.8209013308. The cubic root of 788139420 is about 923.7072450110.

The spelling of 788139420 in words is "seven hundred eighty-eight million, one hundred thirty-nine thousand, four hundred twenty".