11869650 has 72 divisors (see below), whose sum is σ = 34359780. Its totient is φ = 2920320.

The previous prime is 11869639. The next prime is 11869667. The reversal of 11869650 is 5696811.

It can be written as a sum of positive squares in 6 ways, for example, as 6066369 + 5803281 = 2463^2 + 2409^2 .

It is a super-2 number, since 2×11869650² = 281777182245000, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4836 + ... + 6864.

Almost surely, 2^11869650 is an apocalyptic number.

11869650 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 11869650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17179890).

11869650 is an abundant number, since it is smaller than the sum of its proper divisors (22490130).

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

11869650 is a wasteful number, since it uses less digits than its factorization.

11869650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2060 (or 2052 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 11869650 is about 3445.2358409839. The cubic root of 11869650 is about 228.1108648276.

The spelling of 11869650 in words is "eleven million, eight hundred sixty-nine thousand, six hundred fifty".