11728550 has 12 divisors (see below), whose sum is σ = 21815196. Its totient is φ = 4691400.

The previous prime is 11728547. The next prime is 11728559. The reversal of 11728550 is 5582711.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11728559) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117236 + ... + 117335.

It is an arithmetic number, because the mean of its divisors is an integer number (1817933).

Almost surely, 2^11728550 is an apocalyptic number.

11728550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11728550 is a deficient number, since it is larger than the sum of its proper divisors (10086646).

11728550 is a wasteful number, since it uses less digits than its factorization.

11728550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234583 (or 234578 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 11728550 is about 3424.6970668951. The cubic root of 11728550 is about 227.2033730199.

The spelling of 11728550 in words is "eleven million, seven hundred twenty-eight thousand, five hundred fifty".