427138181928 has 112 divisors (see below), whose sum is σ = 1226326063680. Its totient is φ = 139349955744.

The previous prime is 427138181801. The next prime is 427138181929. The reversal of 427138181928 is 829181831724.

427138181928 is a `hidden beast` number, since 4 + 2 + 71 + 381 + 8 + 192 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (427138181929) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 505050 + ... + 1053257.

Almost surely, 2^427138181928 is an apocalyptic number.

It is an amenable number.

427138181928 is an abundant number, since it is smaller than the sum of its proper divisors (799187881752).

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

427138181928 is a wasteful number, since it uses less digits than its factorization.

427138181928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558378 (or 1558359 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 54.

The spelling of 427138181928 in words is "four hundred twenty-seven billion, one hundred thirty-eight million, one hundred eighty-one thousand, nine hundred twenty-eight".