11798556 has 72 divisors (see below), whose sum is σ = 34629504. Its totient is φ = 3037440.

The previous prime is 11798543. The next prime is 11798557. The reversal of 11798556 is 65589711.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11798557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104356 + ... + 104468.

Almost surely, 2^11798556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11798556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17314752).

11798556 is an abundant number, since it is smaller than the sum of its proper divisors (22830948).

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

11798556 is a wasteful number, since it uses less digits than its factorization.

11798556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251 (or 136 counting only the distinct ones).

The product of its digits is 75600, while the sum is 42.

The square root of 11798556 is about 3434.9026187070. The cubic root of 11798556 is about 227.6545244919.

The spelling of 11798556 in words is "eleven million, seven hundred ninety-eight thousand, five hundred fifty-six".