428539057 has 4 divisors (see below), whose sum is σ = 431377216. Its totient is φ = 425700900.

The previous prime is 428539051. The next prime is 428539063. The reversal of 428539057 is 750935824.

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 an interprime number because it is at equal distance from previous prime (428539051) and next prime (428539063).

It is a cyclic number.

It is not a de Polignac number, because 428539057 - 2¹¹ = 428537009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428539051) 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, 1418853 + ... + 1419154.

It is an arithmetic number, because the mean of its divisors is an integer number (107844304).

Almost surely, 2^428539057 is an apocalyptic number.

It is an amenable number.

428539057 is a deficient number, since it is larger than the sum of its proper divisors (2838159).

428539057 is a wasteful number, since it uses less digits than its factorization.

428539057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2838158.

The product of its (nonzero) digits is 302400, while the sum is 43.

The square root of 428539057 is about 20701.1849177770. The cubic root of 428539057 is about 753.9284578463.

The spelling of 428539057 in words is "four hundred twenty-eight million, five hundred thirty-nine thousand, fifty-seven".