889987628 has 12 divisors (see below), whose sum is σ = 1559367432. Its totient is φ = 444454080.

The previous prime is 889987613. The next prime is 889987633. The reversal of 889987628 is 826789988.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 131213 + ... + 137828.

It is an arithmetic number, because the mean of its divisors is an integer number (129947286).

Almost surely, 2^889987628 is an apocalyptic number.

It is an amenable number.

889987628 is a deficient number, since it is larger than the sum of its proper divisors (669379804).

889987628 is a wasteful number, since it uses less digits than its factorization.

889987628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269872 (or 269870 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 65.

The square root of 889987628 is about 29832.6604244409. The cubic root of 889987628 is about 961.8957144227.

The spelling of 889987628 in words is "eight hundred eighty-nine million, nine hundred eighty-seven thousand, six hundred twenty-eight".