11998736 has 40 divisors (see below), whose sum is σ = 25426944. Its totient is φ = 5460480.

The previous prime is 11998733. The next prime is 11998739. The reversal of 11998736 is 63789911.

It is an interprime number because it is at equal distance from previous prime (11998733) and next prime (11998739).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11998733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7721 + ... + 9143.

Almost surely, 2^11998736 is an apocalyptic number.

11998736 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 11998736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12713472).

11998736 is an abundant number, since it is smaller than the sum of its proper divisors (13428208).

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

11998736 is a wasteful number, since it uses less digits than its factorization.

11998736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479 (or 1473 counting only the distinct ones).

The product of its digits is 81648, while the sum is 44.

The square root of 11998736 is about 3463.9191676481. The cubic root of 11998736 is about 228.9348097906.

The spelling of 11998736 in words is "eleven million, nine hundred ninety-eight thousand, seven hundred thirty-six".