19780852 has 48 divisors (see below), whose sum is σ = 44004352. Its totient is φ = 7568640.

The previous prime is 19780837. The next prime is 19780853. The reversal of 19780852 is 25808791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19780853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10408 + ... + 12160.

Almost surely, 2^19780852 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19780852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22002176).

19780852 is an abundant number, since it is smaller than the sum of its proper divisors (24223500).

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

19780852 is a wasteful number, since it uses less digits than its factorization.

19780852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1808 (or 1806 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 19780852 is about 4447.5669753248. The cubic root of 19780852 is about 270.4466862948.

The spelling of 19780852 in words is "nineteen million, seven hundred eighty thousand, eight hundred fifty-two".