32506981 has 12 divisors (see below), whose sum is σ = 36734688. Its totient is φ = 28698384.

The previous prime is 32506963. The next prime is 32506987. The reversal of 32506981 is 18960523.

It is not a de Polignac number, because 32506981 - 2¹¹ = 32504933 is a prime.

It is a super-2 number, since 2×32506981² = 2113407627468722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32506987) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 295 + ... + 8068.

It is an arithmetic number, because the mean of its divisors is an integer number (3061224).

Almost surely, 2^32506981 is an apocalyptic number.

It is an amenable number.

32506981 is a deficient number, since it is larger than the sum of its proper divisors (4227707).

32506981 is a wasteful number, since it uses less digits than its factorization.

32506981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8412 (or 8399 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 32506981 is about 5701.4893668234. The cubic root of 32506981 is about 319.1480626726.

The spelling of 32506981 in words is "thirty-two million, five hundred six thousand, nine hundred eighty-one".