11813898 has 8 divisors (see below), whose sum is σ = 23627808. Its totient is φ = 3937964.

The previous prime is 11813891. The next prime is 11813899. The reversal of 11813898 is 89831811.

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

11813898 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (11813891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 984486 + ... + 984497.

It is an arithmetic number, because the mean of its divisors is an integer number (2953476).

Almost surely, 2^11813898 is an apocalyptic number.

11813898 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11813898 is a wasteful number, since it uses less digits than its factorization.

11813898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968988.

The product of its digits is 13824, while the sum is 39.

The square root of 11813898 is about 3437.1351442735. The cubic root of 11813898 is about 227.7531569836.

The spelling of 11813898 in words is "eleven million, eight hundred thirteen thousand, eight hundred ninety-eight".