8195920 has 40 divisors (see below), whose sum is σ = 19425096. Its totient is φ = 3214848.

The previous prime is 8195917. The next prime is 8195923. The reversal of 8195920 is 295918.

It is an interprime number because it is at equal distance from previous prime (8195917) and next prime (8195923).

It can be written as a sum of positive squares in 4 ways, for example, as 2085136 + 6110784 = 1444^2 + 2472^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an Ulam number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8195923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3274 + ... + 5206.

Almost surely, 2^8195920 is an apocalyptic number.

8195920 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 8195920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9712548).

8195920 is an abundant number, since it is smaller than the sum of its proper divisors (11229176).

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

8195920 is a wasteful number, since it uses less digits than its factorization.

8195920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999 (or 1993 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 8195920 is about 2862.8517251161. The cubic root of 8195920 is about 201.6195170909.

The spelling of 8195920 in words is "eight million, one hundred ninety-five thousand, nine hundred twenty".