11862640 has 40 divisors (see below), whose sum is σ = 27944640. Its totient is φ = 4682496.

The previous prime is 11862623. The next prime is 11862661. The reversal of 11862640 is 4626811.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 11862599 and 11862608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5382 + ... + 7258.

It is an arithmetic number, because the mean of its divisors is an integer number (698616).

Almost surely, 2^11862640 is an apocalyptic number.

11862640 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 11862640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13972320).

11862640 is an abundant number, since it is smaller than the sum of its proper divisors (16082000).

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

11862640 is a wasteful number, since it uses less digits than its factorization.

11862640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1969 (or 1963 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 11862640 is about 3444.2183438336. The cubic root of 11862640 is about 228.0659499380.

The spelling of 11862640 in words is "eleven million, eight hundred sixty-two thousand, six hundred forty".