11863440 has 60 divisors (see below), whose sum is σ = 39843804. Its totient is φ = 3163392.

The previous prime is 11863427. The next prime is 11863441. The reversal of 11863440 is 4436811.

It can be written as a sum of positive squares in 2 ways, for example, as 4112784 + 7750656 = 2028^2 + 2784^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11863441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7519 + ... + 8958.

Almost surely, 2^11863440 is an apocalyptic number.

11863440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11863440 is an abundant number, since it is smaller than the sum of its proper divisors (27980364).

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

11863440 is a wasteful number, since it uses less digits than its factorization.

11863440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16496 (or 16487 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 11863440 is about 3444.3344785314. The cubic root of 11863440 is about 228.0710766399.

Subtracting from 11863440 its product of nonzero digits (2304), we obtain a square (11861136 = 3444²).

The spelling of 11863440 in words is "eleven million, eight hundred sixty-three thousand, four hundred forty".