19863468 has 60 divisors (see below), whose sum is σ = 52527552. Its totient is φ = 6544800.

The previous prime is 19863449. The next prime is 19863509. The reversal of 19863468 is 86436891.

19863468 is a `hidden beast` number, since 1 + 9 + 8 + 634 + 6 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 32421 + ... + 33027.

Almost surely, 2^19863468 is an apocalyptic number.

19863468 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19863468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26263776).

19863468 is an abundant number, since it is smaller than the sum of its proper divisors (32664084).

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

19863468 is a wasteful number, since it uses less digits than its factorization.

19863468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724 (or 713 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 19863468 is about 4456.8450724700. The cubic root of 19863468 is about 270.8226759883.

The spelling of 19863468 in words is "nineteen million, eight hundred sixty-three thousand, four hundred sixty-eight".