11889550 has 12 divisors (see below), whose sum is σ = 22114656. Its totient is φ = 4755800.

The previous prime is 11889547. The next prime is 11889569. The reversal of 11889550 is 5598811.

It is a super-2 number, since 2×11889550² = 282722798405000, 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 5 ways as a sum of consecutive naturals, for example, 118846 + ... + 118945.

It is an arithmetic number, because the mean of its divisors is an integer number (1842888).

Almost surely, 2^11889550 is an apocalyptic number.

11889550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11889550 is a deficient number, since it is larger than the sum of its proper divisors (10225106).

11889550 is a wasteful number, since it uses less digits than its factorization.

11889550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237803 (or 237798 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 37.

The square root of 11889550 is about 3448.1226776320. The cubic root of 11889550 is about 228.2382730137.

The spelling of 11889550 in words is "eleven million, eight hundred eighty-nine thousand, five hundred fifty".