845388 has 36 divisors (see below), whose sum is σ = 2232048. Its totient is φ = 269280.

The previous prime is 845387. The next prime is 845431. The reversal of 845388 is 883548.

845388 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (845381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 318 + ... + 1338.

2⁸⁴⁵³⁸⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 845388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1116024).

845388 is an abundant number, since it is smaller than the sum of its proper divisors (1386660).

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

845388 is a wasteful number, since it uses less digits than its factorization.

845388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054 (or 1049 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 845388 is about 919.4498354995. The cubic root of 845388 is about 94.5551873834. Note that the first 3 decimals are identical.

The spelling of 845388 in words is "eight hundred forty-five thousand, three hundred eighty-eight".