11489988 has 12 divisors (see below), whose sum is σ = 26810000. Its totient is φ = 3829992.

The previous prime is 11489983. The next prime is 11489993. The reversal of 11489988 is 88998411.

11489988 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11489983) and next prime (11489993).

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 not an unprimeable number, because it can be changed into a prime (11489983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 478738 + ... + 478761.

Almost surely, 2^11489988 is an apocalyptic number.

It is an amenable number.

11489988 is an abundant number, since it is smaller than the sum of its proper divisors (15320012).

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

11489988 is a wasteful number, since it uses less digits than its factorization.

11489988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957506 (or 957504 counting only the distinct ones).

The product of its digits is 165888, while the sum is 48.

The square root of 11489988 is about 3389.6884812620. The cubic root of 11489988 is about 225.6523487744.

The spelling of 11489988 in words is "eleven million, four hundred eighty-nine thousand, nine hundred eighty-eight".