11998154 has 8 divisors (see below), whose sum is σ = 20568288. Its totient is φ = 5142060.

The previous prime is 11998153. The next prime is 11998171. The reversal of 11998154 is 45189911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11998153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 428492 + ... + 428519.

It is an arithmetic number, because the mean of its divisors is an integer number (2571036).

Almost surely, 2^11998154 is an apocalyptic number.

11998154 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

11998154 is a deficient number, since it is larger than the sum of its proper divisors (8570134).

11998154 is an equidigital number, since it uses as much as digits as its factorization.

11998154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857020.

The product of its digits is 12960, while the sum is 38.

The square root of 11998154 is about 3463.8351577406. The cubic root of 11998154 is about 228.9311082281.

The spelling of 11998154 in words is "eleven million, nine hundred ninety-eight thousand, one hundred fifty-four".