8471920 has 20 divisors (see below), whose sum is σ = 19697400. Its totient is φ = 3388736.

The previous prime is 8471917. The next prime is 8471921. The reversal of 8471920 is 291748.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8471921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52870 + ... + 53029.

It is an arithmetic number, because the mean of its divisors is an integer number (984870).

Almost surely, 2^8471920 is an apocalyptic number.

8471920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8471920 is an abundant number, since it is smaller than the sum of its proper divisors (11225480).

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

8471920 is a wasteful number, since it uses less digits than its factorization.

8471920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105912 (or 105906 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 8471920 is about 2910.6562833835. The cubic root of 8471920 is about 203.8577760441.

The spelling of 8471920 in words is "eight million, four hundred seventy-one thousand, nine hundred twenty".