28250429 has 2 divisors, whose sum is σ = 28250430. Its totient is φ = 28250428.

The previous prime is 28250419. The next prime is 28250449. The reversal of 28250429 is 92405282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17347225 + 10903204 = 4165^2 + 3302^2 .

It is a cyclic number.

It is not a de Polignac number, because 28250429 - 2²⁴ = 11473213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28250395 and 28250404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28250419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14125214 + 14125215.

It is an arithmetic number, because the mean of its divisors is an integer number (14125215).

Almost surely, 2^28250429 is an apocalyptic number.

It is an amenable number.

28250429 is a deficient number, since it is larger than the sum of its proper divisors (1).

28250429 is an equidigital number, since it uses as much as digits as its factorization.

28250429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 28250429 is about 5315.1132631394. The cubic root of 28250429 is about 304.5615091046.

The spelling of 28250429 in words is "twenty-eight million, two hundred fifty thousand, four hundred twenty-nine".