32806428 has 12 divisors (see below), whose sum is σ = 76548360. Its totient is φ = 10935472.

The previous prime is 32806399. The next prime is 32806429. The reversal of 32806428 is 82460823.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32806429) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1366923 + ... + 1366946.

It is an arithmetic number, because the mean of its divisors is an integer number (6379030).

Almost surely, 2^32806428 is an apocalyptic number.

It is an amenable number.

32806428 is an abundant number, since it is smaller than the sum of its proper divisors (43741932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

32806428 is a wasteful number, since it uses less digits than its factorization.

32806428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2733876 (or 2733874 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 32806428 is about 5727.6895865611. The cubic root of 32806428 is about 320.1250422783.

The spelling of 32806428 in words is "thirty-two million, eight hundred six thousand, four hundred twenty-eight".