11618228 has 6 divisors (see below), whose sum is σ = 20331906. Its totient is φ = 5809112.

The previous prime is 11618207. The next prime is 11618231. The reversal of 11618228 is 82281611.

11618228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11546404 + 71824 = 3398^2 + 268^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11618228.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1452275 + ... + 1452282.

It is an arithmetic number, because the mean of its divisors is an integer number (3388651).

Almost surely, 2^11618228 is an apocalyptic number.

It is an amenable number.

11618228 is a deficient number, since it is larger than the sum of its proper divisors (8713678).

11618228 is a wasteful number, since it uses less digits than its factorization.

11618228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2904561 (or 2904559 counting only the distinct ones).

The product of its digits is 1536, while the sum is 29.

The square root of 11618228 is about 3408.5521853127. The cubic root of 11618228 is about 226.4887483101.

Adding to 11618228 its reverse (82281611), we get a palindrome (93899839).

The spelling of 11618228 in words is "eleven million, six hundred eighteen thousand, two hundred twenty-eight".