19898136 has 40 divisors (see below), whose sum is σ = 55735020. Its totient is φ = 6632496.

The previous prime is 19898101. The next prime is 19898159. The reversal of 19898136 is 63189891.

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

It is a junction number, because it is equal to n+sod(n) for n = 19898091 and 19898100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 14706 + ... + 16001.

Almost surely, 2^19898136 is an apocalyptic number.

It is an amenable number.

19898136 is an abundant number, since it is smaller than the sum of its proper divisors (35836884).

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

19898136 is a wasteful number, since it uses less digits than its factorization.

19898136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30725 (or 30712 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 19898136 is about 4460.7326752452. The cubic root of 19898136 is about 270.9801413352.

The spelling of 19898136 in words is "nineteen million, eight hundred ninety-eight thousand, one hundred thirty-six".