32491272 has 64 divisors (see below), whose sum is σ = 92482560. Its totient is φ = 9416000.

The previous prime is 32491271. The next prime is 32491289. The reversal of 32491272 is 27219423.

32491272 = 94² + 95² + ... + 461².

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32491271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3397 + ... + 8747.

It is an arithmetic number, because the mean of its divisors is an integer number (1445040).

Almost surely, 2^32491272 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 32491272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46241280).

32491272 is an abundant number, since it is smaller than the sum of its proper divisors (59991288).

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

32491272 is a wasteful number, since it uses less digits than its factorization.

32491272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5394 (or 5390 counting only the distinct ones).

The product of its digits is 6048, while the sum is 30.

The square root of 32491272 is about 5700.1115778553. Note that the first 3 decimals coincide. The cubic root of 32491272 is about 319.0966449507.

The spelling of 32491272 in words is "thirty-two million, four hundred ninety-one thousand, two hundred seventy-two".