11278764 has 60 divisors (see below), whose sum is σ = 33703824. Its totient is φ = 3221856.

The previous prime is 11278759. The next prime is 11278777. The reversal of 11278764 is 46787211.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 219 + ... + 4754.

Almost surely, 2^11278764 is an apocalyptic number.

11278764 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11278764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16851912).

11278764 is an abundant number, since it is smaller than the sum of its proper divisors (22425060).

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

11278764 is a wasteful number, since it uses less digits than its factorization.

11278764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4996 (or 4985 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 11278764 is about 3358.3871128862. The cubic root of 11278764 is about 224.2610423976.

The spelling of 11278764 in words is "eleven million, two hundred seventy-eight thousand, seven hundred sixty-four".