32491072 has 14 divisors (see below), whose sum is σ = 64474598. Its totient is φ = 16245504.

The previous prime is 32491061. The next prime is 32491117. The reversal of 32491072 is 27019423.

It can be written as a sum of positive squares in only one way, i.e., 32444416 + 46656 = 5696^2 + 216^2 .

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 32491072.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 253773 + ... + 253900.

Almost surely, 2^32491072 is an apocalyptic number.

32491072 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

32491072 is a deficient number, since it is larger than the sum of its proper divisors (31983526).

32491072 is an equidigital number, since it uses as much as digits as its factorization.

32491072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507685 (or 507675 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 32491072 is about 5700.0940343121. The cubic root of 32491072 is about 319.0959902163.

The spelling of 32491072 in words is "thirty-two million, four hundred ninety-one thousand, seventy-two".