19998052 has 24 divisors (see below), whose sum is σ = 38336760. Its totient is φ = 9085440.

The previous prime is 19998047. The next prime is 19998149. The reversal of 19998052 is 25089991.

It can be written as a sum of positive squares in 4 ways, for example, as 2742336 + 17255716 = 1656^2 + 4154^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3099 + ... + 7042.

It is an arithmetic number, because the mean of its divisors is an integer number (1597365).

Almost surely, 2^19998052 is an apocalyptic number.

It is an amenable number.

19998052 is a deficient number, since it is larger than the sum of its proper divisors (18338708).

19998052 is a wasteful number, since it uses less digits than its factorization.

19998052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10191 (or 10189 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 43.

The square root of 19998052 is about 4471.9181566751. The cubic root of 19998052 is about 271.4329485642.

The spelling of 19998052 in words is "nineteen million, nine hundred ninety-eight thousand, fifty-two".