13772168 has 8 divisors (see below), whose sum is σ = 25822830. Its totient is φ = 6886080.

The previous prime is 13772167. The next prime is 13772183. The reversal of 13772168 is 86127731.

It can be written as a sum of positive squares in only one way, i.e., 8305924 + 5466244 = 2882^2 + 2338^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×13772168² = 379345222840448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13772167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 860753 + ... + 860768.

Almost surely, 2^13772168 is an apocalyptic number.

It is an amenable number.

13772168 is a deficient number, since it is larger than the sum of its proper divisors (12050662).

13772168 is a wasteful number, since it uses less digits than its factorization.

13772168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1721527 (or 1721523 counting only the distinct ones).

The product of its digits is 14112, while the sum is 35.

The square root of 13772168 is about 3711.0871722448. The cubic root of 13772168 is about 239.6996706292.

Adding to 13772168 its reverse (86127731), we get a palindrome (99899899).

The spelling of 13772168 in words is "thirteen million, seven hundred seventy-two thousand, one hundred sixty-eight".