11868220 has 48 divisors (see below), whose sum is σ = 30679488. Its totient is φ = 3755520.

The previous prime is 11868211. The next prime is 11868223. The reversal of 11868220 is 2286811.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11868223) 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 15 ways as a sum of consecutive naturals, for example, 1441 + ... + 5080.

It is an arithmetic number, because the mean of its divisors is an integer number (639156).

Almost surely, 2^11868220 is an apocalyptic number.

11868220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11868220 is an abundant number, since it is smaller than the sum of its proper divisors (18811268).

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

11868220 is a wasteful number, since it uses less digits than its factorization.

11868220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6550 (or 6548 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 11868220 is about 3445.0283017705. The cubic root of 11868220 is about 228.1017038824.

The spelling of 11868220 in words is "eleven million, eight hundred sixty-eight thousand, two hundred twenty".