11849778 has 12 divisors (see below), whose sum is σ = 25674558. Its totient is φ = 3949920.

The previous prime is 11849771. The next prime is 11849791. The reversal of 11849778 is 87794811.

It can be written as a sum of positive squares in only one way, i.e., 11675889 + 173889 = 3417^2 + 417^2 .

It is not an unprimeable number, because it can be changed into a prime (11849771) 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, 329143 + ... + 329178.

Almost surely, 2^11849778 is an apocalyptic number.

11849778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11849778 is an abundant number, since it is smaller than the sum of its proper divisors (13824780).

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

11849778 is a wasteful number, since it uses less digits than its factorization.

11849778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658329 (or 658326 counting only the distinct ones).

The product of its digits is 112896, while the sum is 45.

The square root of 11849778 is about 3442.3506503551. The cubic root of 11849778 is about 227.9834937266.

The spelling of 11849778 in words is "eleven million, eight hundred forty-nine thousand, seven hundred seventy-eight".