194545220 has 48 divisors (see below), whose sum is σ = 423601920. Its totient is φ = 75001344.

The previous prime is 194545217. The next prime is 194545231. The reversal of 194545220 is 22545491.

It is a super-3 number, since 3×194545220³ (a number of 26 digits) contains 333 as substring.

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61436 + ... + 64524.

It is an arithmetic number, because the mean of its divisors is an integer number (8825040).

Almost surely, 2^194545220 is an apocalyptic number.

194545220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194545220 is an abundant number, since it is smaller than the sum of its proper divisors (229056700).

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

194545220 is a wasteful number, since it uses less digits than its factorization.

194545220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3212 (or 3210 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 194545220 is about 13947.9468023075. The cubic root of 194545220 is about 579.4378421525.

The spelling of 194545220 in words is "one hundred ninety-four million, five hundred forty-five thousand, two hundred twenty".