11817472 has 20 divisors (see below), whose sum is σ = 23612886. Its totient is φ = 5908480.

The previous prime is 11817461. The next prime is 11817493. The reversal of 11817472 is 27471811.

It can be written as a sum of positive squares in only one way, i.e., 10137856 + 1679616 = 3184^2 + 1296^2 .

It is a super-4 number, since 4×11817472⁴ (a number of 29 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11029 + ... + 12052.

Almost surely, 2^11817472 is an apocalyptic number.

It is an amenable number.

11817472 is a deficient number, since it is larger than the sum of its proper divisors (11795414).

11817472 is an frugal number, since it uses more digits than its factorization.

11817472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23099 (or 23083 counting only the distinct ones).

The product of its digits is 3136, while the sum is 31.

The square root of 11817472 is about 3437.6550146866. The cubic root of 11817472 is about 227.7761216792.

The spelling of 11817472 in words is "eleven million, eight hundred seventeen thousand, four hundred seventy-two".