19849896 has 96 divisors (see below), whose sum is σ = 59641920. Its totient is φ = 5913600.

The previous prime is 19849883. The next prime is 19849913. The reversal of 19849896 is 69894891.

19849896 = T₁₄₃ + T₁₄₄ + ... + T₄₉₅.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56056 + ... + 56408.

It is an arithmetic number, because the mean of its divisors is an integer number (621270).

Almost surely, 2^19849896 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 19849896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29820960).

19849896 is an abundant number, since it is smaller than the sum of its proper divisors (39792024).

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

19849896 is a wasteful number, since it uses less digits than its factorization.

19849896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 440 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 54.

The square root of 19849896 is about 4455.3222105702. The cubic root of 19849896 is about 270.7609807728.

The spelling of 19849896 in words is "nineteen million, eight hundred forty-nine thousand, eight hundred ninety-six".