11867730 has 64 divisors (see below), whose sum is σ = 33619968. Its totient is φ = 2623680.

The previous prime is 11867719. The next prime is 11867731. The reversal of 11867730 is 3776811.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11867691 and 11867700.

It is not an unprimeable number, because it can be changed into a prime (11867731) 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 31 ways as a sum of consecutive naturals, for example, 5599 + ... + 7421.

It is an arithmetic number, because the mean of its divisors is an integer number (525312).

Almost surely, 2^11867730 is an apocalyptic number.

11867730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11867730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16809984).

11867730 is an abundant number, since it is smaller than the sum of its proper divisors (21752238).

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

11867730 is a wasteful number, since it uses less digits than its factorization.

11867730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1871.

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 11867730 is about 3444.9571840590. The cubic root of 11867730 is about 228.0985646480.

The spelling of 11867730 in words is "eleven million, eight hundred sixty-seven thousand, seven hundred thirty".