19469868 has 96 divisors (see below), whose sum is σ = 53125632. Its totient is φ = 5536960.

The previous prime is 19469867. The next prime is 19469887. The reversal of 19469868 is 86896491.

It is a happy number.

It is a nialpdrome in base 11.

It is a zygodrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 19469868.

It is not an unprimeable number, because it can be changed into a prime (19469867) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 367330 + ... + 367382.

It is an arithmetic number, because the mean of its divisors is an integer number (553392).

Almost surely, 2^19469868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19469868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26562816).

19469868 is an abundant number, since it is smaller than the sum of its proper divisors (33655764).

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

19469868 is a wasteful number, since it uses less digits than its factorization.

19469868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 92 counting only the distinct ones).

The product of its digits is 746496, while the sum is 51.

The square root of 19469868 is about 4412.4673369896. The cubic root of 19469868 is about 269.0219207041.

The spelling of 19469868 in words is "nineteen million, four hundred sixty-nine thousand, eight hundred sixty-eight".