28310137 has 2 divisors, whose sum is σ = 28310138. Its totient is φ = 28310136.

The previous prime is 28310123. The next prime is 28310141. The reversal of 28310137 is 73101382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16088121 + 12222016 = 4011^2 + 3496^2 .

It is a cyclic number.

It is not a de Polignac number, because 28310137 - 2²³ = 19921529 is a prime.

It is not a weakly prime, because it can be changed into another prime (28310197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14155068 + 14155069.

It is an arithmetic number, because the mean of its divisors is an integer number (14155069).

Almost surely, 2^28310137 is an apocalyptic number.

It is an amenable number.

28310137 is a deficient number, since it is larger than the sum of its proper divisors (1).

28310137 is an equidigital number, since it uses as much as digits as its factorization.

28310137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 28310137 is about 5320.7271119651. The cubic root of 28310137 is about 304.7759242826.

The spelling of 28310137 in words is "twenty-eight million, three hundred ten thousand, one hundred thirty-seven".