19927152 has 120 divisors (see below), whose sum is σ = 65111904. Its totient is φ = 5571072.

The previous prime is 19927151. The next prime is 19927153. The reversal of 19927152 is 25172991.

It is an interprime number because it is at equal distance from previous prime (19927151) and next prime (19927153).

It is a super-2 number, since 2×19927152² = 794182773662208, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19927151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53238 + ... + 53610.

Almost surely, 2^19927152 is an apocalyptic number.

19927152 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 19927152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32555952).

19927152 is an abundant number, since it is smaller than the sum of its proper divisors (45184752).

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

19927152 is a wasteful number, since it uses less digits than its factorization.

19927152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447 (or 438 counting only the distinct ones).

The product of its digits is 11340, while the sum is 36.

The square root of 19927152 is about 4463.9838709386. The cubic root of 19927152 is about 271.1117942193. Note that the first 3 decimals are identical.

The spelling of 19927152 in words is "nineteen million, nine hundred twenty-seven thousand, one hundred fifty-two".