195028380 has 72 divisors (see below), whose sum is σ = 604199232. Its totient is φ = 50898816.

The previous prime is 195028373. The next prime is 195028387. The reversal of 195028380 is 83820591.

It is an interprime number because it is at equal distance from previous prime (195028373) and next prime (195028387).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195028387) 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, 3067 + ... + 19986.

It is an arithmetic number, because the mean of its divisors is an integer number (8391656).

Almost surely, 2^195028380 is an apocalyptic number.

195028380 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 195028380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302099616).

195028380 is an abundant number, since it is smaller than the sum of its proper divisors (409170852).

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

195028380 is a wasteful number, since it uses less digits than its factorization.

195028380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23115 (or 23110 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 195028380 is about 13965.2561738050. The cubic root of 195028380 is about 579.9171304512.

The spelling of 195028380 in words is "one hundred ninety-five million, twenty-eight thousand, three hundred eighty".