428854237 has 4 divisors (see below), whose sum is σ = 490119136. Its totient is φ = 367589340.

The previous prime is 428854229. The next prime is 428854253. The reversal of 428854237 is 732458824.

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 428854237 - 2³ = 428854229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 428854193 and 428854202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428854267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30632439 + ... + 30632452.

It is an arithmetic number, because the mean of its divisors is an integer number (122529784).

Almost surely, 2^428854237 is an apocalyptic number.

It is an amenable number.

428854237 is a deficient number, since it is larger than the sum of its proper divisors (61264899).

428854237 is an equidigital number, since it uses as much as digits as its factorization.

428854237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61264898.

The product of its digits is 430080, while the sum is 43.

The square root of 428854237 is about 20708.7961262841. The cubic root of 428854237 is about 754.1132445349.

The spelling of 428854237 in words is "four hundred twenty-eight million, eight hundred fifty-four thousand, two hundred thirty-seven".