19471896 has 24 divisors (see below), whose sum is σ = 52736580. Its totient is φ = 6490608.

The previous prime is 19471889. The next prime is 19471913. The reversal of 19471896 is 69817491.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 135150 + ... + 135293.

Almost surely, 2^19471896 is an apocalyptic number.

It is an amenable number.

19471896 is an abundant number, since it is smaller than the sum of its proper divisors (33264684).

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

19471896 is a wasteful number, since it uses less digits than its factorization.

19471896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270455 (or 270448 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 19471896 is about 4412.6971344066. The cubic root of 19471896 is about 269.0312609064.

Subtracting 19471896 from its reverse (69817491), we obtain a triangular number (50345595 = T₁₀₀₃₄).

The spelling of 19471896 in words is "nineteen million, four hundred seventy-one thousand, eight hundred ninety-six".