11778648 has 32 divisors (see below), whose sum is σ = 33653760. Its totient is φ = 3365280.

The previous prime is 11778647. The next prime is 11778659. The reversal of 11778648 is 84687711.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11778643) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 34888 + ... + 35223.

It is an arithmetic number, because the mean of its divisors is an integer number (1051680).

Almost surely, 2^11778648 is an apocalyptic number.

It is an amenable number.

11778648 is an abundant number, since it is smaller than the sum of its proper divisors (21875112).

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

11778648 is a wasteful number, since it uses less digits than its factorization.

11778648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70127 (or 70123 counting only the distinct ones).

The product of its digits is 75264, while the sum is 42.

The square root of 11778648 is about 3432.0034965017. The cubic root of 11778648 is about 227.5264100081.

The spelling of 11778648 in words is "eleven million, seven hundred seventy-eight thousand, six hundred forty-eight".