11868690 has 64 divisors (see below), whose sum is σ = 30191616. Its totient is φ = 2980032.

The previous prime is 11868679. The next prime is 11868697. The reversal of 11868690 is 9686811.

It is a super-2 number, since 2×11868690² = 281731604632200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11868697) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70987 + ... + 71153.

It is an arithmetic number, because the mean of its divisors is an integer number (471744).

Almost surely, 2^11868690 is an apocalyptic number.

11868690 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 11868690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15095808).

11868690 is an abundant number, since it is smaller than the sum of its proper divisors (18322926).

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

11868690 is a wasteful number, since it uses less digits than its factorization.

11868690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303.

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 11868690 is about 3445.0965153389. The cubic root of 11868690 is about 228.1047149036.

The spelling of 11868690 in words is "eleven million, eight hundred sixty-eight thousand, six hundred ninety".