845273920 has 56 divisors (see below), whose sum is σ = 2100340224. Its totient is φ = 323406336.

The previous prime is 845273911. The next prime is 845273927. The reversal of 845273920 is 29372548.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845273927) 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, 50064 + ... + 64783.

Almost surely, 2^845273920 is an apocalyptic number.

845273920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

845273920 is an abundant number, since it is smaller than the sum of its proper divisors (1255066304).

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

845273920 is a wasteful number, since it uses less digits than its factorization.

845273920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114887 (or 114877 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 845273920 is about 29073.5948929609. The cubic root of 845273920 is about 945.5093397506.

The spelling of 845273920 in words is "eight hundred forty-five million, two hundred seventy-three thousand, nine hundred twenty".