32643457 has 24 divisors (see below), whose sum is σ = 42057792. Its totient is φ = 25048800.

The previous prime is 32643449. The next prime is 32643487. The reversal of 32643457 is 75434623.

It is not a de Polignac number, because 32643457 - 2³ = 32643449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (32643487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37843 + ... + 38695.

It is an arithmetic number, because the mean of its divisors is an integer number (1752408).

Almost surely, 2^32643457 is an apocalyptic number.

It is an amenable number.

32643457 is a deficient number, since it is larger than the sum of its proper divisors (9414335).

32643457 is a wasteful number, since it uses less digits than its factorization.

32643457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949 (or 942 counting only the distinct ones).

The product of its digits is 60480, while the sum is 34.

The square root of 32643457 is about 5713.4452828394. The cubic root of 32643457 is about 319.5940718761.

The spelling of 32643457 in words is "thirty-two million, six hundred forty-three thousand, four hundred fifty-seven".