11851240 has 32 divisors (see below), whose sum is σ = 26973000. Its totient is φ = 4685824.

The previous prime is 11851219. The next prime is 11851291. The reversal of 11851240 is 4215811.

It can be written as a sum of positive squares in 4 ways, for example, as 7107556 + 4743684 = 2666^2 + 2178^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1896 + ... + 5224.

Almost surely, 2^11851240 is an apocalyptic number.

11851240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11851240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13486500).

11851240 is an abundant number, since it is smaller than the sum of its proper divisors (15121760).

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

11851240 is a wasteful number, since it uses less digits than its factorization.

11851240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3429 (or 3425 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 11851240 is about 3442.5629986973. The cubic root of 11851240 is about 227.9928693779.

The spelling of 11851240 in words is "eleven million, eight hundred fifty-one thousand, two hundred forty".