845478238 has 64 divisors (see below), whose sum is σ = 1529150400. Its totient is φ = 346071040.

The previous prime is 845478233. The next prime is 845478241. The reversal of 845478238 is 832874548.

It is a junction number, because it is equal to n+sod(n) for n = 845478191 and 845478200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845478233) 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 31 ways as a sum of consecutive naturals, for example, 1485618 + ... + 1486186.

It is an arithmetic number, because the mean of its divisors is an integer number (23892975).

Almost surely, 2^845478238 is an apocalyptic number.

845478238 is a deficient number, since it is larger than the sum of its proper divisors (683672162).

845478238 is a wasteful number, since it uses less digits than its factorization.

845478238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765.

The product of its digits is 1720320, while the sum is 49.

The square root of 845478238 is about 29077.1084876058. The cubic root of 845478238 is about 945.5855158514.

The spelling of 845478238 in words is "eight hundred forty-five million, four hundred seventy-eight thousand, two hundred thirty-eight".