845908720 has 80 divisors (see below), whose sum is σ = 2102490432. Its totient is φ = 315729920.

The previous prime is 845908703. The next prime is 845908751. The reversal of 845908720 is 27809548.

845908720 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 (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69834 + ... + 81046.

Almost surely, 2^845908720 is an apocalyptic number.

845908720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 845908720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1051245216).

845908720 is an abundant number, since it is smaller than the sum of its proper divisors (1256581712).

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

845908720 is a wasteful number, since it uses less digits than its factorization.

845908720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11290 (or 11284 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 845908720 is about 29084.5099666472. The cubic root of 845908720 is about 945.7459727620.

The spelling of 845908720 in words is "eight hundred forty-five million, nine hundred eight thousand, seven hundred twenty".