428806253 has 2 divisors, whose sum is σ = 428806254. Its totient is φ = 428806252.

The previous prime is 428806211. The next prime is 428806289. The reversal of 428806253 is 352608824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 419307529 + 9498724 = 20477^2 + 3082^2 .

It is a cyclic number.

It is not a de Polignac number, because 428806253 - 2²⁰ = 427757677 is a prime.

It is a super-2 number, since 2×428806253² = 367749605223800018, 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 (428806153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214403126 + 214403127.

It is an arithmetic number, because the mean of its divisors is an integer number (214403127).

Almost surely, 2^428806253 is an apocalyptic number.

It is an amenable number.

428806253 is a deficient number, since it is larger than the sum of its proper divisors (1).

428806253 is an equidigital number, since it uses as much as digits as its factorization.

428806253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 428806253 is about 20707.6375523622. The cubic root of 428806253 is about 754.0851178689.

The spelling of 428806253 in words is "four hundred twenty-eight million, eight hundred six thousand, two hundred fifty-three".