11071972 has 6 divisors (see below), whose sum is σ = 19375958. Its totient is φ = 5535984.

The previous prime is 11071969. The next prime is 11071979. The reversal of 11071972 is 27917011.

11071972 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., 10342656 + 729316 = 3216^2 + 854^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11071972.

It is not an unprimeable number, because it can be changed into a prime (11071979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1383993 + ... + 1384000.

Almost surely, 2^11071972 is an apocalyptic number.

It is an amenable number.

11071972 is a deficient number, since it is larger than the sum of its proper divisors (8303986).

11071972 is a wasteful number, since it uses less digits than its factorization.

11071972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2767997 (or 2767995 counting only the distinct ones).

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

The square root of 11071972 is about 3327.4572874794. The cubic root of 11071972 is about 222.8819983392.

Adding to 11071972 its reverse (27917011), we get a palindrome (38988983).

The spelling of 11071972 in words is "eleven million, seventy-one thousand, nine hundred seventy-two".