32720272 has 40 divisors (see below), whose sum is σ = 69745536. Its totient is φ = 14775936.

The previous prime is 32720267. The next prime is 32720273. The reversal of 32720272 is 27202723.

It is not an unprimeable number, because it can be changed into a prime (32720273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8103 + ... + 11449.

Almost surely, 2^32720272 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 32720272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34872768).

32720272 is an abundant number, since it is smaller than the sum of its proper divisors (37025264).

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

32720272 is a wasteful number, since it uses less digits than its factorization.

32720272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3415 (or 3409 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 32720272 is about 5720.1636340231. The cubic root of 32720272 is about 319.8445599238.

Adding to 32720272 its reverse (27202723), we get a palindrome (59922995).

The spelling of 32720272 in words is "thirty-two million, seven hundred twenty thousand, two hundred seventy-two".