19981052 has 48 divisors (see below), whose sum is σ = 45581760. Its totient is φ = 7437312.

The previous prime is 19981021. The next prime is 19981057. The reversal of 19981052 is 25018991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19981057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4574 + ... + 7802.

It is an arithmetic number, because the mean of its divisors is an integer number (949620).

Almost surely, 2^19981052 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 19981052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22790880).

19981052 is an abundant number, since it is smaller than the sum of its proper divisors (25600708).

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

19981052 is a wasteful number, since it uses less digits than its factorization.

19981052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3270 (or 3268 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 19981052 is about 4470.0170022048. The cubic root of 19981052 is about 271.3560132661.

The spelling of 19981052 in words is "nineteen million, nine hundred eighty-one thousand, fifty-two".