11117772 has 18 divisors (see below), whose sum is σ = 28103348. Its totient is φ = 3705912.

The previous prime is 11117761. The next prime is 11117773. The reversal of 11117772 is 27771111.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (11117773) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 154378 + ... + 154449.

Almost surely, 2^11117772 is an apocalyptic number.

11117772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11117772 is an abundant number, since it is smaller than the sum of its proper divisors (16985576).

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

11117772 is a wasteful number, since it uses less digits than its factorization.

11117772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308837 (or 308832 counting only the distinct ones).

The product of its digits is 686, while the sum is 27.

The square root of 11117772 is about 3334.3323169714. The cubic root of 11117772 is about 223.1888979717.

Adding to 11117772 its reverse (27771111), we get a palindrome (38888883).

The spelling of 11117772 in words is "eleven million, one hundred seventeen thousand, seven hundred seventy-two".