11989628 has 48 divisors (see below), whose sum is σ = 25127424. Its totient is φ = 4898880.

The previous prime is 11989597. The next prime is 11989657. The reversal of 11989628 is 82698911.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73475 + ... + 73637.

It is an arithmetic number, because the mean of its divisors is an integer number (523488).

Almost surely, 2^11989628 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11989628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12563712).

11989628 is an abundant number, since it is smaller than the sum of its proper divisors (13137796).

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

11989628 is a wasteful number, since it uses less digits than its factorization.

11989628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282 (or 280 counting only the distinct ones).

The product of its digits is 62208, while the sum is 44.

The square root of 11989628 is about 3462.6042222582. The cubic root of 11989628 is about 228.8768685190.

The spelling of 11989628 in words is "eleven million, nine hundred eighty-nine thousand, six hundred twenty-eight".