28130653 has 2 divisors, whose sum is σ = 28130654. Its totient is φ = 28130652.

The previous prime is 28130647. The next prime is 28130657. The reversal of 28130653 is 35603182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17749369 + 10381284 = 4213^2 + 3222^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28130653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28130657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14065326 + 14065327.

It is an arithmetic number, because the mean of its divisors is an integer number (14065327).

Almost surely, 2^28130653 is an apocalyptic number.

It is an amenable number.

28130653 is a deficient number, since it is larger than the sum of its proper divisors (1).

28130653 is an equidigital number, since it uses as much as digits as its factorization.

28130653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 28130653 is about 5303.8338020719. The cubic root of 28130653 is about 304.1304733399.

The spelling of 28130653 in words is "twenty-eight million, one hundred thirty thousand, six hundred fifty-three".