195090400 has 36 divisors (see below), whose sum is σ = 476266392. Its totient is φ = 78035840.

The previous prime is 195090397. The next prime is 195090433. The reversal of 195090400 is 4090591.

195090400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 121132 + ... + 122731.

It is an arithmetic number, because the mean of its divisors is an integer number (13229622).

Almost surely, 2^195090400 is an apocalyptic number.

195090400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195090400 is an abundant number, since it is smaller than the sum of its proper divisors (281175992).

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

195090400 is a wasteful number, since it uses less digits than its factorization.

195090400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243883 (or 243870 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 195090400 is about 13967.4765079452. The cubic root of 195090400 is about 579.9785961186.

The spelling of 195090400 in words is "one hundred ninety-five million, ninety thousand, four hundred".