11773728 has 48 divisors (see below), whose sum is σ = 34342560. Its totient is φ = 3924288.

The previous prime is 11773693. The next prime is 11773747. The reversal of 11773728 is 82737711.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

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

It is a junction number, because it is equal to n+sod(n) for n = 11773692 and 11773701.

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 7 ways as a sum of consecutive naturals, for example, 5950 + ... + 7677.

It is an arithmetic number, because the mean of its divisors is an integer number (715470).

Almost surely, 2^11773728 is an apocalyptic number.

11773728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11773728 is an abundant number, since it is smaller than the sum of its proper divisors (22568832).

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

11773728 is a wasteful number, since it uses less digits than its factorization.

11773728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13646 (or 13632 counting only the distinct ones).

The product of its digits is 16464, while the sum is 36.

The square root of 11773728 is about 3431.2866391486. The cubic root of 11773728 is about 227.4947259575.

The spelling of 11773728 in words is "eleven million, seven hundred seventy-three thousand, seven hundred twenty-eight".