32021472 has 96 divisors (see below), whose sum is σ = 101751552. Its totient is φ = 8607744.

The previous prime is 32021471. The next prime is 32021501. The reversal of 32021472 is 27412023.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32021471) 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, 10023 + ... + 12825.

It is an arithmetic number, because the mean of its divisors is an integer number (1059912).

Almost surely, 2^32021472 is an apocalyptic number.

32021472 is a gapful number since it is divisible by the number (32) 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 32021472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50875776).

32021472 is an abundant number, since it is smaller than the sum of its proper divisors (69730080).

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

32021472 is a wasteful number, since it uses less digits than its factorization.

32021472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2840 (or 2832 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 32021472 is about 5658.7518058314. The cubic root of 32021472 is about 317.5512042574.

Adding to 32021472 its reverse (27412023), we get a palindrome (59433495).

The spelling of 32021472 in words is "thirty-two million, twenty-one thousand, four hundred seventy-two".