19902252 has 24 divisors (see below), whose sum is σ = 46901232. Its totient is φ = 6568000.

The previous prime is 19902241. The next prime is 19902299. The reversal of 19902252 is 25220991.

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, 6999 + ... + 9422.

It is an arithmetic number, because the mean of its divisors is an integer number (1954218).

Almost surely, 2^19902252 is an apocalyptic number.

19902252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19902252 is an abundant number, since it is smaller than the sum of its proper divisors (26998980).

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

19902252 is a wasteful number, since it uses less digits than its factorization.

19902252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16529 (or 16527 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 19902252 is about 4461.1940105761. The cubic root of 19902252 is about 270.9988244481.

The spelling of 19902252 in words is "nineteen million, nine hundred two thousand, two hundred fifty-two".