13772744 has 8 divisors (see below), whose sum is σ = 25823910. Its totient is φ = 6886368.

The previous prime is 13772729. The next prime is 13772749. The reversal of 13772744 is 44727731.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12180100 + 1592644 = 3490^2 + 1262^2 .

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

It is not an unprimeable number, because it can be changed into a prime (13772749) 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 as a sum of consecutive naturals, namely, 860789 + ... + 860804.

Almost surely, 2^13772744 is an apocalyptic number.

It is an amenable number.

13772744 is a deficient number, since it is larger than the sum of its proper divisors (12051166).

13772744 is a wasteful number, since it uses less digits than its factorization.

13772744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1721599 (or 1721595 counting only the distinct ones).

The product of its digits is 32928, while the sum is 35.

The square root of 13772744 is about 3711.1647767244. The cubic root of 13772744 is about 239.7030122741.

The spelling of 13772744 in words is "thirteen million, seven hundred seventy-two thousand, seven hundred forty-four".