11820690 has 96 divisors (see below), whose sum is σ = 36391680. Its totient is φ = 2604672.

The previous prime is 11820673. The next prime is 11820707. The reversal of 11820690 is 9602811.

11820690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11820673) and next prime (11820707).

It is a super-2 number, since 2×11820690² = 279457424152200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17947 + ... + 18593.

It is an arithmetic number, because the mean of its divisors is an integer number (379080).

Almost surely, 2^11820690 is an apocalyptic number.

11820690 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 11820690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18195840).

11820690 is an abundant number, since it is smaller than the sum of its proper divisors (24570990).

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

11820690 is a wasteful number, since it uses less digits than its factorization.

11820690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696 (or 693 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 11820690 is about 3438.1230344477. The cubic root of 11820690 is about 227.7967949399.

The spelling of 11820690 in words is "eleven million, eight hundred twenty thousand, six hundred ninety".