428823873378 has 24 divisors (see below), whose sum is σ = 938696936268. Its totient is φ = 141467668992.

The previous prime is 428823873347. The next prime is 428823873391. The reversal of 428823873378 is 873378328824.

428823873378 is a `hidden beast` number, since 4 + 28 + 8 + 238 + 7 + 3 + 378 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 408823408449 + 20000464929 = 639393^2 + 141423^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122800051 + ... + 122803542.

Almost surely, 2^428823873378 is an apocalyptic number.

428823873378 is an abundant number, since it is smaller than the sum of its proper divisors (509873062890).

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

428823873378 is a wasteful number, since it uses less digits than its factorization.

428823873378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245603698 (or 245603695 counting only the distinct ones).

The product of its digits is 86704128, while the sum is 63.

The spelling of 428823873378 in words is "four hundred twenty-eight billion, eight hundred twenty-three million, eight hundred seventy-three thousand, three hundred seventy-eight".