28148137 has 2 divisors, whose sum is σ = 28148138. Its totient is φ = 28148136.

The previous prime is 28148129. The next prime is 28148161. The reversal of 28148137 is 73184182.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26460736 + 1687401 = 5144^2 + 1299^2 .

It is a cyclic number.

It is not a de Polignac number, because 28148137 - 2³ = 28148129 is a prime.

It is not a weakly prime, because it can be changed into another prime (28148117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14074068 + 14074069.

It is an arithmetic number, because the mean of its divisors is an integer number (14074069).

Almost surely, 2^28148137 is an apocalyptic number.

It is an amenable number.

28148137 is a deficient number, since it is larger than the sum of its proper divisors (1).

28148137 is an equidigital number, since it uses as much as digits as its factorization.

28148137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 34.

The square root of 28148137 is about 5305.4817877362. The cubic root of 28148137 is about 304.1934688669.

The spelling of 28148137 in words is "twenty-eight million, one hundred forty-eight thousand, one hundred thirty-seven".