9171682020 has 72 divisors (see below), whose sum is σ = 28212649920. Its totient is φ = 2411330880.

The previous prime is 9171681997. The next prime is 9171682027. The reversal of 9171682020 is 202861719.

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 (9171682027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 346050 + ... + 371609.

It is an arithmetic number, because the mean of its divisors is an integer number (391842360).

Almost surely, 2^9171682020 is an apocalyptic number.

9171682020 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

9171682020 is an abundant number, since it is smaller than the sum of its proper divisors (19040967900).

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

9171682020 is a wasteful number, since it uses less digits than its factorization.

9171682020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717745 (or 717740 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 9171682020 is about 95768.8990225950. The cubic root of 9171682020 is about 2093.2270089365.

The spelling of 9171682020 in words is "nine billion, one hundred seventy-one million, six hundred eighty-two thousand, twenty".