428278183 has 8 divisors (see below), whose sum is σ = 455468720. Its totient is φ = 401552640.

The previous prime is 428278181. The next prime is 428278189. The reversal of 428278183 is 381872824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 428278183 - 2¹ = 428278181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428278181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114348 + ... + 118033.

It is an arithmetic number, because the mean of its divisors is an integer number (56933590).

Almost surely, 2^428278183 is an apocalyptic number.

428278183 is a deficient number, since it is larger than the sum of its proper divisors (27190537).

428278183 is a wasteful number, since it uses less digits than its factorization.

428278183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232497.

The product of its digits is 172032, while the sum is 43.

The square root of 428278183 is about 20694.8830148904. The cubic root of 428278183 is about 753.7754416450.

The spelling of 428278183 in words is "four hundred twenty-eight million, two hundred seventy-eight thousand, one hundred eighty-three".