194890420 has 48 divisors (see below), whose sum is σ = 418279680. Its totient is φ = 76260096.

The previous prime is 194890417. The next prime is 194890441. The reversal of 194890420 is 24098491.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 194890420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182809 + ... + 183871.

It is an arithmetic number, because the mean of its divisors is an integer number (8714160).

Almost surely, 2^194890420 is an apocalyptic number.

194890420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194890420 is an abundant number, since it is smaller than the sum of its proper divisors (223389260).

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

194890420 is a wasteful number, since it uses less digits than its factorization.

194890420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264 (or 1262 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 194890420 is about 13960.3158990046. The cubic root of 194890420 is about 579.7803567851.

The spelling of 194890420 in words is "one hundred ninety-four million, eight hundred ninety thousand, four hundred twenty".