28102469 has 2 divisors, whose sum is σ = 28102470. Its totient is φ = 28102468.

The previous prime is 28102453. The next prime is 28102519. The reversal of 28102469 is 96420182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15499969 + 12602500 = 3937^2 + 3550^2 .

It is a cyclic number.

It is not a de Polignac number, because 28102469 - 2⁴ = 28102453 is a prime.

It is a super-2 number, since 2×28102469² = 1579497527791922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28102169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14051234 + 14051235.

It is an arithmetic number, because the mean of its divisors is an integer number (14051235).

Almost surely, 2^28102469 is an apocalyptic number.

It is an amenable number.

28102469 is a deficient number, since it is larger than the sum of its proper divisors (1).

28102469 is an equidigital number, since it uses as much as digits as its factorization.

28102469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 28102469 is about 5301.1761902431. The cubic root of 28102469 is about 304.0288703249.

The spelling of 28102469 in words is "twenty-eight million, one hundred two thousand, four hundred sixty-nine".