845640048 has 40 divisors (see below), whose sum is σ = 2383168896. Its totient is φ = 256254400.

The previous prime is 845640043. The next prime is 845640067. The reversal of 845640048 is 840046548.

845640048 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 845639988 and 845640015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845640043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 800268 + ... + 801323.

Almost surely, 2^845640048 is an apocalyptic number.

845640048 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

845640048 is an abundant number, since it is smaller than the sum of its proper divisors (1537528848).

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

845640048 is a wasteful number, since it uses less digits than its factorization.

845640048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601613 (or 1601607 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 39.

The square root of 845640048 is about 29079.8907838389. The cubic root of 845640048 is about 945.6458349409.

The spelling of 845640048 in words is "eight hundred forty-five million, six hundred forty thousand, forty-eight".