19785468 has 12 divisors (see below), whose sum is σ = 46166120. Its totient is φ = 6595152.

The previous prime is 19785443. The next prime is 19785487. The reversal of 19785468 is 86458791.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 824383 + ... + 824406.

Almost surely, 2^19785468 is an apocalyptic number.

It is an amenable number.

19785468 is an abundant number, since it is smaller than the sum of its proper divisors (26380652).

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

19785468 is a wasteful number, since it uses less digits than its factorization.

19785468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1648796 (or 1648794 counting only the distinct ones).

The product of its digits is 483840, while the sum is 48.

The square root of 19785468 is about 4448.0858804659. The cubic root of 19785468 is about 270.4677215331.

The spelling of 19785468 in words is "nineteen million, seven hundred eighty-five thousand, four hundred sixty-eight".