19385420 has 12 divisors (see below), whose sum is σ = 40709424. Its totient is φ = 7754160.

The previous prime is 19385419. The next prime is 19385441. The reversal of 19385420 is 2458391.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 484616 + ... + 484655.

It is an arithmetic number, because the mean of its divisors is an integer number (3392452).

Almost surely, 2^19385420 is an apocalyptic number.

19385420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19385420 is an abundant number, since it is smaller than the sum of its proper divisors (21324004).

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

19385420 is a wasteful number, since it uses less digits than its factorization.

19385420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969280 (or 969278 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 19385420 is about 4402.8876887788. The cubic root of 19385420 is about 268.6324079022.

The spelling of 19385420 in words is "nineteen million, three hundred eighty-five thousand, four hundred twenty".