13728461 has 2 divisors, whose sum is σ = 13728462. Its totient is φ = 13728460.

The previous prime is 13728439. The next prime is 13728479. The reversal of 13728461 is 16482731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7123561 + 6604900 = 2669^2 + 2570^2 .

It is a cyclic number.

It is not a de Polignac number, because 13728461 - 2¹⁰ = 13727437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13728661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6864230 + 6864231.

It is an arithmetic number, because the mean of its divisors is an integer number (6864231).

Almost surely, 2^13728461 is an apocalyptic number.

It is an amenable number.

13728461 is a deficient number, since it is larger than the sum of its proper divisors (1).

13728461 is an equidigital number, since it uses as much as digits as its factorization.

13728461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 32.

The square root of 13728461 is about 3705.1937871048. The cubic root of 13728461 is about 239.4458336687.

The spelling of 13728461 in words is "thirteen million, seven hundred twenty-eight thousand, four hundred sixty-one".