428620253 has 4 divisors (see below), whose sum is σ = 428699040. Its totient is φ = 428541468.

The previous prime is 428620243. The next prime is 428620271. The reversal of 428620253 is 352026824.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 428620253 - 2⁴ = 428620237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428620223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30575 + ... + 42332.

It is an arithmetic number, because the mean of its divisors is an integer number (107174760).

Almost surely, 2^428620253 is an apocalyptic number.

It is an amenable number.

428620253 is a deficient number, since it is larger than the sum of its proper divisors (78787).

428620253 is an equidigital number, since it uses as much as digits as its factorization.

428620253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78786.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 428620253 is about 20703.1459686686. The cubic root of 428620253 is about 753.9760708610.

The spelling of 428620253 in words is "four hundred twenty-eight million, six hundred twenty thousand, two hundred fifty-three".