19998252 has 30 divisors (see below), whose sum is σ = 52280228. Its totient is φ = 6665976.

The previous prime is 19998229. The next prime is 19998263. The reversal of 19998252 is 25289991.

It is a junction number, because it is equal to n+sod(n) for n = 19998198 and 19998207.

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, 30538 + ... + 31185.

Almost surely, 2^19998252 is an apocalyptic number.

19998252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19998252 is an abundant number, since it is smaller than the sum of its proper divisors (32281976).

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

19998252 is a wasteful number, since it uses less digits than its factorization.

19998252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61739 (or 61728 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 19998252 is about 4471.9405183880. The cubic root of 19998252 is about 271.4338534258.

The spelling of 19998252 in words is "nineteen million, nine hundred ninety-eight thousand, two hundred fifty-two".