13749572 has 6 divisors (see below), whose sum is σ = 24061758. Its totient is φ = 6874784.

The previous prime is 13749569. The next prime is 13749577. The reversal of 13749572 is 27594731.

It can be written as a sum of positive squares in only one way, i.e., 7529536 + 6220036 = 2744^2 + 2494^2 .

It is not an unprimeable number, because it can be changed into a prime (13749577) 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, 1718693 + ... + 1718700.

It is an arithmetic number, because the mean of its divisors is an integer number (4010293).

Almost surely, 2^13749572 is an apocalyptic number.

It is an amenable number.

13749572 is a deficient number, since it is larger than the sum of its proper divisors (10312186).

13749572 is a wasteful number, since it uses less digits than its factorization.

13749572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3437397 (or 3437395 counting only the distinct ones).

The product of its digits is 52920, while the sum is 38.

The square root of 13749572 is about 3708.0415315905. The cubic root of 13749572 is about 239.5685070968.

The spelling of 13749572 in words is "thirteen million, seven hundred forty-nine thousand, five hundred seventy-two".