19898996 has 24 divisors (see below), whose sum is σ = 37673160. Its totient is φ = 9142272.

The previous prime is 19898987. The next prime is 19899037. The reversal of 19898996 is 69989891.

It can be written as a sum of positive squares in 4 ways, for example, as 2676496 + 17222500 = 1636^2 + 4150^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12620 + ... + 14108.

It is an arithmetic number, because the mean of its divisors is an integer number (1569715).

Almost surely, 2^19898996 is an apocalyptic number.

It is an amenable number.

19898996 is a deficient number, since it is larger than the sum of its proper divisors (17774164).

19898996 is a wasteful number, since it uses less digits than its factorization.

19898996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1763 (or 1761 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 59.

The square root of 19898996 is about 4460.8290709239. The cubic root of 19898996 is about 270.9840452111.

The spelling of 19898996 in words is "nineteen million, eight hundred ninety-eight thousand, nine hundred ninety-six".