32987481 has 4 divisors (see below), whose sum is σ = 43983312. Its totient is φ = 21991652.

The previous prime is 32987473. The next prime is 32987483. The reversal of 32987481 is 18478923.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18478923 = 3 ⋅6159641.

It is a cyclic number.

It is not a de Polignac number, because 32987481 - 2³ = 32987473 is a prime.

It is a super-2 number, since 2×32987481² = 2176347805450722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (32987483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5497911 + ... + 5497916.

It is an arithmetic number, because the mean of its divisors is an integer number (10995828).

Almost surely, 2^32987481 is an apocalyptic number.

It is an amenable number.

32987481 is a deficient number, since it is larger than the sum of its proper divisors (10995831).

32987481 is a wasteful number, since it uses less digits than its factorization.

32987481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10995830.

The product of its digits is 96768, while the sum is 42.

The square root of 32987481 is about 5743.4729040886. The cubic root of 32987481 is about 320.7128671398.

The spelling of 32987481 in words is "thirty-two million, nine hundred eighty-seven thousand, four hundred eighty-one".