32543428 has 36 divisors (see below), whose sum is σ = 62130432. Its totient is φ = 14897520.

The previous prime is 32543393. The next prime is 32543429. The reversal of 32543428 is 82434523.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a self number, because there is not a number n which added to its sum of digits gives 32543428.

It is not an unprimeable number, because it can be changed into a prime (32543429) 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 11 ways as a sum of consecutive naturals, for example, 44401 + ... + 45127.

Almost surely, 2^32543428 is an apocalyptic number.

32543428 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

32543428 is a deficient number, since it is larger than the sum of its proper divisors (29587004).

32543428 is a wasteful number, since it uses less digits than its factorization.

32543428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800 (or 779 counting only the distinct ones).

The product of its digits is 23040, while the sum is 31.

The square root of 32543428 is about 5704.6847415085. The cubic root of 32543428 is about 319.2672949575.

The spelling of 32543428 in words is "thirty-two million, five hundred forty-three thousand, four hundred twenty-eight".