16028557 has 2 divisors, whose sum is σ = 16028558. Its totient is φ = 16028556.

The previous prime is 16028549. The next prime is 16028563. The reversal of 16028557 is 75582061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13995081 + 2033476 = 3741^2 + 1426^2 .

It is a cyclic number.

It is not a de Polignac number, because 16028557 - 2³ = 16028549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16028567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8014278 + 8014279.

It is an arithmetic number, because the mean of its divisors is an integer number (8014279).

Almost surely, 2^16028557 is an apocalyptic number.

It is an amenable number.

16028557 is a deficient number, since it is larger than the sum of its proper divisors (1).

16028557 is an equidigital number, since it uses as much as digits as its factorization.

16028557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 16028557 is about 4003.5680336420. The cubic root of 16028557 is about 252.1340357333.

The spelling of 16028557 in words is "sixteen million, twenty-eight thousand, five hundred fifty-seven".