13773428 has 12 divisors (see below), whose sum is σ = 24558660. Its totient is φ = 6756672.

The previous prime is 13773427. The next prime is 13773433. The reversal of 13773428 is 82437731.

It can be written as a sum of positive squares in 2 ways, for example, as 5866084 + 7907344 = 2422^2 + 2812^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13773427) 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 3 ways as a sum of consecutive naturals, for example, 32273 + ... + 32696.

It is an arithmetic number, because the mean of its divisors is an integer number (2046555).

Almost surely, 2^13773428 is an apocalyptic number.

It is an amenable number.

13773428 is a deficient number, since it is larger than the sum of its proper divisors (10785232).

13773428 is a wasteful number, since it uses less digits than its factorization.

13773428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65026 (or 65024 counting only the distinct ones).

The product of its digits is 28224, while the sum is 35.

The square root of 13773428 is about 3711.2569299363. The cubic root of 13773428 is about 239.7069803564.

The spelling of 13773428 in words is "thirteen million, seven hundred seventy-three thousand, four hundred twenty-eight".