19998702 has 24 divisors (see below), whose sum is σ = 44150184. Its totient is φ = 6540144.

The previous prime is 19998701. The next prime is 19998721. The reversal of 19998702 is 20789991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19998701) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9528 + ... + 11435.

It is an arithmetic number, because the mean of its divisors is an integer number (1839591).

Almost surely, 2^19998702 is an apocalyptic number.

19998702 is an abundant number, since it is smaller than the sum of its proper divisors (24151482).

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

19998702 is a wasteful number, since it uses less digits than its factorization.

19998702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21024 (or 21021 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 19998702 is about 4471.9908318332. The cubic root of 19998702 is about 271.4358893423.

It can be divided in two parts, 1999 and 8702, that added together give a palindrome (10701).

The spelling of 19998702 in words is "nineteen million, nine hundred ninety-eight thousand, seven hundred two".