19808652 has 24 divisors (see below), whose sum is σ = 46979632. Its totient is φ = 6494400.

The previous prime is 19808647. The next prime is 19808683. The reversal of 19808652 is 25680891.

It is a self number, because there is not a number n which added to its sum of digits gives 19808652.

It is a congruent number.

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, 12799 + ... + 14262.

Almost surely, 2^19808652 is an apocalyptic number.

19808652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19808652 is an abundant number, since it is smaller than the sum of its proper divisors (27170980).

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

19808652 is a wasteful number, since it uses less digits than its factorization.

19808652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27129 (or 27127 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 19808652 is about 4450.6911822772. The cubic root of 19808652 is about 270.5733222034.

The spelling of 19808652 in words is "nineteen million, eight hundred eight thousand, six hundred fifty-two".