11917072 has 10 divisors (see below), whose sum is σ = 23089358. Its totient is φ = 5958528.

The previous prime is 11917067. The next prime is 11917097. The reversal of 11917072 is 27071911.

11917072 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., 10653696 + 1263376 = 3264^2 + 1124^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11917072.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372393 + ... + 372424.

Almost surely, 2^11917072 is an apocalyptic number.

It is an amenable number.

11917072 is a deficient number, since it is larger than the sum of its proper divisors (11172286).

11917072 is an equidigital number, since it uses as much as digits as its factorization.

11917072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744825 (or 744819 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 28.

The square root of 11917072 is about 3452.1112380687. Note that the first 3 decimals coincide. The cubic root of 11917072 is about 228.4142463993.

Adding to 11917072 its reverse (27071911), we get a palindrome (38988983).

The spelling of 11917072 in words is "eleven million, nine hundred seventeen thousand, seventy-two".