32121252 has 72 divisors (see below), whose sum is σ = 85898400. Its totient is φ = 10377360.

The previous prime is 32121161. The next prime is 32121253. The reversal of 32121252 is 25212123.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (32121253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 452377 + ... + 452447.

Almost surely, 2^32121252 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 32121252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42949200).

32121252 is an abundant number, since it is smaller than the sum of its proper divisors (53777148).

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

32121252 is a wasteful number, since it uses less digits than its factorization.

32121252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214 (or 135 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 32121252 is about 5667.5613803469. The cubic root of 32121252 is about 317.8806957232.

Adding to 32121252 its reverse (25212123), we get a palindrome (57333375).

The spelling of 32121252 in words is "thirty-two million, one hundred twenty-one thousand, two hundred fifty-two".