19900098 has 24 divisors (see below), whose sum is σ = 45653868. Its totient is φ = 6243072.

The previous prime is 19900057. The next prime is 19900123. The reversal of 19900098 is 89000991.

It can be written as a sum of positive squares in 2 ways, for example, as 16670889 + 3229209 = 4083^2 + 1797^2 .

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 11 ways as a sum of consecutive naturals, for example, 32211 + ... + 32822.

Almost surely, 2^19900098 is an apocalyptic number.

19900098 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

19900098 is an abundant number, since it is smaller than the sum of its proper divisors (25753770).

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

19900098 is a wasteful number, since it uses less digits than its factorization.

19900098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65058 (or 65055 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 36.

The square root of 19900098 is about 4460.9525888536. The cubic root of 19900098 is about 270.9890474552.

It can be divided in two parts, 1 and 9900098, that added together give a palindrome (9900099).

The spelling of 19900098 in words is "nineteen million, nine hundred thousand, ninety-eight".