11719998 has 32 divisors (see below), whose sum is σ = 27417600. Its totient is φ = 3700728.

The previous prime is 11719997. The next prime is 11719999. The reversal of 11719998 is 89991711.

It is an interprime number because it is at equal distance from previous prime (11719997) and next prime (11719999).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11719997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4686 + ... + 6737.

It is an arithmetic number, because the mean of its divisors is an integer number (856800).

Almost surely, 2^11719998 is an apocalyptic number.

11719998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11719998 is an abundant number, since it is smaller than the sum of its proper divisors (15697602).

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

11719998 is a wasteful number, since it uses less digits than its factorization.

11719998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11453 (or 11447 counting only the distinct ones).

The product of its digits is 40824, while the sum is 45.

The square root of 11719998 is about 3423.4482616216. The cubic root of 11719998 is about 227.1481369876.

The spelling of 11719998 in words is "eleven million, seven hundred nineteen thousand, nine hundred ninety-eight".