428138792 has 16 divisors (see below), whose sum is σ = 819840960. Its totient is φ = 209514544.

The previous prime is 428138791. The next prime is 428138801. The reversal of 428138792 is 297831824.

It is not an unprimeable number, because it can be changed into a prime (428138791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 568958 + ... + 569709.

It is an arithmetic number, because the mean of its divisors is an integer number (51240060).

Almost surely, 2^428138792 is an apocalyptic number.

It is an amenable number.

428138792 is a deficient number, since it is larger than the sum of its proper divisors (391702168).

428138792 is a wasteful number, since it uses less digits than its factorization.

428138792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138720 (or 1138716 counting only the distinct ones).

The product of its digits is 193536, while the sum is 44.

The square root of 428138792 is about 20691.5149759509. The cubic root of 428138792 is about 753.6936560846.

The spelling of 428138792 in words is "four hundred twenty-eight million, one hundred thirty-eight thousand, seven hundred ninety-two".