11180398 has 16 divisors (see below), whose sum is σ = 18224640. Its totient is φ = 5124600.

The previous prime is 11180383. The next prime is 11180419. The reversal of 11180398 is 89308111.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3568 + ... + 5923.

It is an arithmetic number, because the mean of its divisors is an integer number (1139040).

Almost surely, 2^11180398 is an apocalyptic number.

11180398 is a deficient number, since it is larger than the sum of its proper divisors (7044242).

11180398 is a wasteful number, since it uses less digits than its factorization.

11180398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9543.

The product of its (nonzero) digits is 1728, while the sum is 31.

The square root of 11180398 is about 3343.7102147166. The cubic root of 11180398 is about 223.6071851660.

The spelling of 11180398 in words is "eleven million, one hundred eighty thousand, three hundred ninety-eight".