32745921 has 16 divisors (see below), whose sum is σ = 48168960. Its totient is φ = 19658880.

The previous prime is 32745913. The next prime is 32745929. The reversal of 32745921 is 12954723.

It is an interprime number because it is at equal distance from previous prime (32745913) and next prime (32745929).

It is not a de Polignac number, because 32745921 - 2³ = 32745913 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (32745929) 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, 8641 + ... + 11838.

It is an arithmetic number, because the mean of its divisors is an integer number (3010560).

Almost surely, 2^32745921 is an apocalyptic number.

It is an amenable number.

32745921 is a deficient number, since it is larger than the sum of its proper divisors (15423039).

32745921 is a wasteful number, since it uses less digits than its factorization.

32745921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20536.

The product of its digits is 15120, while the sum is 33.

The square root of 32745921 is about 5722.4051761475. The cubic root of 32745921 is about 319.9281121068.

The spelling of 32745921 in words is "thirty-two million, seven hundred forty-five thousand, nine hundred twenty-one".