11897472 has 32 divisors (see below), whose sum is σ = 31603680. Its totient is φ = 3965696.

The previous prime is 11897471. The next prime is 11897489. The reversal of 11897472 is 27479811.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 11897472.

It is not an unprimeable number, because it can be changed into a prime (11897471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15108 + ... + 15875.

It is an arithmetic number, because the mean of its divisors is an integer number (987615).

Almost surely, 2^11897472 is an apocalyptic number.

11897472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11897472 is an abundant number, since it is smaller than the sum of its proper divisors (19706208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11897472 is an equidigital number, since it uses as much as digits as its factorization.

11897472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31000 (or 30988 counting only the distinct ones).

The product of its digits is 28224, while the sum is 39.

The square root of 11897472 is about 3449.2712273754. The cubic root of 11897472 is about 228.2889534339.

The spelling of 11897472 in words is "eleven million, eight hundred ninety-seven thousand, four hundred seventy-two".