10998018 has 40 divisors (see below), whose sum is σ = 25504380. Its totient is φ = 3538080.

The previous prime is 10998011. The next prime is 10998019. The reversal of 10998018 is 81089901.

It can be written as a sum of positive squares in 2 ways, for example, as 10909809 + 88209 = 3303^2 + 297^2 .

It is not an unprimeable number, because it can be changed into a prime (10998011) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3528 + ... + 5868.

Almost surely, 2^10998018 is an apocalyptic number.

10998018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 10998018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12752190).

10998018 is an abundant number, since it is smaller than the sum of its proper divisors (14506362).

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

10998018 is a wasteful number, since it uses less digits than its factorization.

10998018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2384 (or 2375 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 36.

The square root of 10998018 is about 3316.3259791522. The cubic root of 10998018 is about 222.3846508954.

The spelling of 10998018 in words is "ten million, nine hundred ninety-eight thousand, eighteen".