19955232 has 72 divisors (see below), whose sum is σ = 61916400. Its totient is φ = 6046080.

The previous prime is 19955231. The next prime is 19955239. The reversal of 19955232 is 23255991.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×19955232² = 796422568347648, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (19955231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19 + ... + 6317.

It is an arithmetic number, because the mean of its divisors is an integer number (859950).

Almost surely, 2^19955232 is an apocalyptic number.

19955232 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 19955232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30958200).

19955232 is an abundant number, since it is smaller than the sum of its proper divisors (41961168).

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

19955232 is a wasteful number, since it uses less digits than its factorization.

19955232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6326 (or 6315 counting only the distinct ones).

The product of its digits is 24300, while the sum is 36.

The square root of 19955232 is about 4467.1279363815. The cubic root of 19955232 is about 271.2390786092.

It can be divided in two parts, 1995 and 5232, that added together give a palindrome (7227).

The spelling of 19955232 in words is "nineteen million, nine hundred fifty-five thousand, two hundred thirty-two".