11847280 has 20 divisors (see below), whose sum is σ = 27545112. Its totient is φ = 4738880.

The previous prime is 11847271. The next prime is 11847281. The reversal of 11847280 is 8274811.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11847281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73966 + ... + 74125.

Almost surely, 2^11847280 is an apocalyptic number.

11847280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11847280 is an abundant number, since it is smaller than the sum of its proper divisors (15697832).

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

11847280 is a wasteful number, since it uses less digits than its factorization.

11847280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148104 (or 148098 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 11847280 is about 3441.9877977704. The cubic root of 11847280 is about 227.9674725322.

It can be divided in two parts, 1184 and 7280, that added together give a square (8464 = 92²).

The spelling of 11847280 in words is "eleven million, eight hundred forty-seven thousand, two hundred eighty".