11998340 has 24 divisors (see below), whose sum is σ = 25424280. Its totient is φ = 4755968.

The previous prime is 11998303. The next prime is 11998369. The reversal of 11998340 is 4389911.

It can be written as a sum of positive squares in 4 ways, for example, as 1552516 + 10445824 = 1246^2 + 3232^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11998340.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395 + ... + 4914.

It is an arithmetic number, because the mean of its divisors is an integer number (1059345).

Almost surely, 2^11998340 is an apocalyptic number.

11998340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11998340 is an abundant number, since it is smaller than the sum of its proper divisors (13425940).

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

11998340 is a wasteful number, since it uses less digits than its factorization.

11998340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5431 (or 5429 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 11998340 is about 3463.8620064893. The cubic root of 11998340 is about 228.9322912147.

The spelling of 11998340 in words is "eleven million, nine hundred ninety-eight thousand, three hundred forty".