11947254228 has 216 divisors, whose sum is σ = 39001592448. Its totient is φ = 3013680384.

The previous prime is 11947254217. The next prime is 11947254299. The reversal of 11947254228 is 82245274911.

11947254228 is a `hidden beast` number, since 1 + 19 + 4 + 72 + 542 + 28 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 973426 + ... + 985622.

It is an arithmetic number, because the mean of its divisors is an integer number (180562928).

Almost surely, 2^11947254228 is an apocalyptic number.

11947254228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11947254228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19500796224).

11947254228 is an abundant number, since it is smaller than the sum of its proper divisors (27054338220).

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

11947254228 is a wasteful number, since it uses less digits than its factorization.

11947254228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12263 (or 12245 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The spelling of 11947254228 in words is "eleven billion, nine hundred forty-seven million, two hundred fifty-four thousand, two hundred twenty-eight".