194855520 has 48 divisors (see below), whose sum is σ = 613796400. Its totient is φ = 51961344.

The previous prime is 194855519. The next prime is 194855537. The reversal of 194855520 is 25558491.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202495 + ... + 203454.

It is an arithmetic number, because the mean of its divisors is an integer number (12787425).

Almost surely, 2^194855520 is an apocalyptic number.

194855520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194855520 is an abundant number, since it is smaller than the sum of its proper divisors (418940880).

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

194855520 is a wasteful number, since it uses less digits than its factorization.

194855520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405967 (or 405959 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 39.

The square root of 194855520 is about 13959.0658713253. The cubic root of 194855520 is about 579.7457466652.

The spelling of 194855520 in words is "one hundred ninety-four million, eight hundred fifty-five thousand, five hundred twenty".