9995920 has 80 divisors (see below), whose sum is σ = 26123328. Its totient is φ = 3525120.

The previous prime is 9995911. The next prime is 9995927. The reversal of 9995920 is 295999.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (9995927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32407 + ... + 32713.

Almost surely, 2^9995920 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 9995920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13061664).

9995920 is an abundant number, since it is smaller than the sum of its proper divisors (16127408).

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

9995920 is a wasteful number, since it uses less digits than its factorization.

9995920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368 (or 362 counting only the distinct ones).

The product of its (nonzero) digits is 65610, while the sum is 43.

The square root of 9995920 is about 3161.6324897116. The cubic root of 9995920 is about 215.4141647057.

The spelling of 9995920 in words is "nine million, nine hundred ninety-five thousand, nine hundred twenty".