11661472 has 24 divisors (see below), whose sum is σ = 23043636. Its totient is φ = 5809152.

The previous prime is 11661467. The next prime is 11661491. The reversal of 11661472 is 27416611.

It can be written as a sum of positive squares in 2 ways, for example, as 10732176 + 929296 = 3276^2 + 964^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11661472.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11448 + ... + 12424.

Almost surely, 2^11661472 is an apocalyptic number.

It is an amenable number.

11661472 is a deficient number, since it is larger than the sum of its proper divisors (11382164).

11661472 is an equidigital number, since it uses as much as digits as its factorization.

11661472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360 (or 1352 counting only the distinct ones).

The product of its digits is 2016, while the sum is 28.

The square root of 11661472 is about 3414.8897493184. The cubic root of 11661472 is about 226.7694036388.

The spelling of 11661472 in words is "eleven million, six hundred sixty-one thousand, four hundred seventy-two".