11432778 has 48 divisors (see below), whose sum is σ = 27343584. Its totient is φ = 3175200.

The previous prime is 11432761. The next prime is 11432779. The reversal of 11432778 is 87723411.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (11432779) 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 23 ways as a sum of consecutive naturals, for example, 10353 + ... + 11403.

It is an arithmetic number, because the mean of its divisors is an integer number (569658).

Almost surely, 2^11432778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11432778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13671792).

11432778 is an abundant number, since it is smaller than the sum of its proper divisors (15910806).

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

11432778 is a wasteful number, since it uses less digits than its factorization.

11432778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107 (or 1100 counting only the distinct ones).

The product of its digits is 9408, while the sum is 33.

The square root of 11432778 is about 3381.2391219788. The cubic root of 11432778 is about 225.2772089446.

The spelling of 11432778 in words is "eleven million, four hundred thirty-two thousand, seven hundred seventy-eight".