19722852 has 72 divisors (see below), whose sum is σ = 52468416. Its totient is φ = 6477408.

The previous prime is 19722841. The next prime is 19722881. The reversal of 19722852 is 25822791.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100018 + ... + 100214.

It is an arithmetic number, because the mean of its divisors is an integer number (728728).

Almost surely, 2^19722852 is an apocalyptic number.

19722852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19722852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26234208).

19722852 is an abundant number, since it is smaller than the sum of its proper divisors (32745564).

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

19722852 is a wasteful number, since it uses less digits than its factorization.

19722852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319 (or 305 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 19722852 is about 4441.0417696752. The cubic root of 19722852 is about 270.1820993791.

The spelling of 19722852 in words is "nineteen million, seven hundred twenty-two thousand, eight hundred fifty-two".