195720 has 64 divisors (see below), whose sum is σ = 673920. Its totient is φ = 44544.

The previous prime is 195709. The next prime is 195731. The reversal of 195720 is 27591.

195720 = T₃₇ + T₃₈ + ... + T₁₀₆.

195720 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (195709) and next prime (195731).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nialpdrome in base 12.

It is a congruent number.

It is an unprimeable number.

195720 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 724 + ... + 956.

It is an arithmetic number, because the mean of its divisors is an integer number (10530).

2¹⁹⁵⁷²⁰ is an apocalyptic number.

195720 is a gapful number since it is divisible by the number (10) 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 195720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336960).

195720 is an abundant number, since it is smaller than the sum of its proper divisors (478200).

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

195720 is a wasteful number, since it uses less digits than its factorization.

195720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 195720 is about 442.4025316383. The cubic root of 195720 is about 58.0601832689.

The spelling of 195720 in words is "one hundred ninety-five thousand, seven hundred twenty".