428267485 has 8 divisors (see below), whose sum is σ = 544151736. Its totient is φ = 322460160.

The previous prime is 428267473. The next prime is 428267491. The reversal of 428267485 is 584762824.

It can be written as a sum of positive squares in 4 ways, for example, as 71284249 + 356983236 = 8443^2 + 18894^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 428267485 - 2¹¹ = 428265437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2519136 + ... + 2519305.

It is an arithmetic number, because the mean of its divisors is an integer number (68018967).

Almost surely, 2^428267485 is an apocalyptic number.

It is an amenable number.

428267485 is a deficient number, since it is larger than the sum of its proper divisors (115884251).

428267485 is a wasteful number, since it uses less digits than its factorization.

428267485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5038463.

The product of its digits is 860160, while the sum is 46.

The square root of 428267485 is about 20694.6245435862. The cubic root of 428267485 is about 753.7691653841.

The spelling of 428267485 in words is "four hundred twenty-eight million, two hundred sixty-seven thousand, four hundred eighty-five".