19206420 has 24 divisors (see below), whose sum is σ = 53778144. Its totient is φ = 5121696.

The previous prime is 19206419. The next prime is 19206431. The reversal of 19206420 is 2460291.

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, 159994 + ... + 160113.

It is an arithmetic number, because the mean of its divisors is an integer number (2240756).

Almost surely, 2^19206420 is an apocalyptic number.

19206420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19206420 is an abundant number, since it is smaller than the sum of its proper divisors (34571724).

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

19206420 is a wasteful number, since it uses less digits than its factorization.

19206420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320119 (or 320117 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 19206420 is about 4382.5129777332. The cubic root of 19206420 is about 267.8030222593.

The spelling of 19206420 in words is "nineteen million, two hundred six thousand, four hundred twenty".