194820072 has 32 divisors (see below), whose sum is σ = 512685600. Its totient is φ = 61521984.

The previous prime is 194820047. The next prime is 194820107. The reversal of 194820072 is 270028491.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213163 + ... + 214074.

It is an arithmetic number, because the mean of its divisors is an integer number (16021425).

Almost surely, 2^194820072 is an apocalyptic number.

194820072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

194820072 is an abundant number, since it is smaller than the sum of its proper divisors (317865528).

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

194820072 is a wasteful number, since it uses less digits than its factorization.

194820072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427265 (or 427261 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 194820072 is about 13957.7961011042. The cubic root of 194820072 is about 579.7105888664.

The spelling of 194820072 in words is "one hundred ninety-four million, eight hundred twenty thousand, seventy-two".