11509672 has 8 divisors (see below), whose sum is σ = 21580650. Its totient is φ = 5754832.

The previous prime is 11509651. The next prime is 11509679. The reversal of 11509672 is 27690511.

It can be written as a sum of positive squares in only one way, i.e., 10982596 + 527076 = 3314^2 + 726^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (11509679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 719347 + ... + 719362.

Almost surely, 2^11509672 is an apocalyptic number.

It is an amenable number.

11509672 is a deficient number, since it is larger than the sum of its proper divisors (10070978).

11509672 is a wasteful number, since it uses less digits than its factorization.

11509672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1438715 (or 1438711 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 11509672 is about 3392.5907504443. The cubic root of 11509672 is about 225.7811335564.

The spelling of 11509672 in words is "eleven million, five hundred nine thousand, six hundred seventy-two".