11990016 has 66 divisors (see below), whose sum is σ = 34647522. Its totient is φ = 3993600.

The previous prime is 11990009. The next prime is 11990023. The reversal of 11990016 is 61009911.

It is an interprime number because it is at equal distance from previous prime (11990009) and next prime (11990023).

It can be written as a sum of positive squares in only one way, i.e., 6230016 + 5760000 = 2496^2 + 2400^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8566 + ... + 9866.

Almost surely, 2^11990016 is an apocalyptic number.

11990016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11990016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17323761).

11990016 is an abundant number, since it is smaller than the sum of its proper divisors (22657506).

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

11990016 is a wasteful number, since it uses less digits than its factorization.

11990016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327 (or 1306 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 27.

The square root of 11990016 is about 3462.6602489993. The cubic root of 11990016 is about 228.8793374103.

Adding to 11990016 its reverse (61009911), we get a palindrome (72999927).

The spelling of 11990016 in words is "eleven million, nine hundred ninety thousand, sixteen".