19857852 has 48 divisors (see below), whose sum is σ = 58840320. Its totient is φ = 5673456.

The previous prime is 19857811. The next prime is 19857857. The reversal of 19857852 is 25875891.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 19857798 and 19857807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19857857) 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, 12378 + ... + 13889.

It is an arithmetic number, because the mean of its divisors is an integer number (1225840).

Almost surely, 2^19857852 is an apocalyptic number.

19857852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19857852 is an abundant number, since it is smaller than the sum of its proper divisors (38982468).

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

19857852 is a wasteful number, since it uses less digits than its factorization.

19857852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26287 (or 26279 counting only the distinct ones).

The product of its digits is 201600, while the sum is 45.

The square root of 19857852 is about 4456.2149858372. The cubic root of 19857852 is about 270.7971503431.

The spelling of 19857852 in words is "nineteen million, eight hundred fifty-seven thousand, eight hundred fifty-two".