32281385628 has 12 divisors (see below), whose sum is σ = 75323233160. Its totient is φ = 10760461872.

The previous prime is 32281385599. The next prime is 32281385659. The reversal of 32281385628 is 82658318223.

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

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1345057723 + ... + 1345057746.

Almost surely, 2^32281385628 is an apocalyptic number.

It is an amenable number.

32281385628 is an abundant number, since it is smaller than the sum of its proper divisors (43041847532).

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

32281385628 is a wasteful number, since it uses less digits than its factorization.

32281385628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2690115476 (or 2690115474 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 48.

The spelling of 32281385628 in words is "thirty-two billion, two hundred eighty-one million, three hundred eighty-five thousand, six hundred twenty-eight".