428269745 has 8 divisors (see below), whose sum is σ = 514237416. Its totient is φ = 342406656.

The previous prime is 428269741. The next prime is 428269753. The reversal of 428269745 is 547962824.

It can be written as a sum of positive squares in 4 ways, for example, as 26708224 + 401561521 = 5168^2 + 20039^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 428269745 - 2² = 428269741 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 428269745.

It is not an unprimeable number, because it can be changed into a prime (428269741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16832 + ... + 33761.

It is an arithmetic number, because the mean of its divisors is an integer number (64279677).

Almost surely, 2^428269745 is an apocalyptic number.

It is an amenable number.

428269745 is a deficient number, since it is larger than the sum of its proper divisors (85967671).

428269745 is a wasteful number, since it uses less digits than its factorization.

428269745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52291.

The product of its digits is 967680, while the sum is 47.

The square root of 428269745 is about 20694.6791470658. The cubic root of 428269745 is about 753.7704912808.

The spelling of 428269745 in words is "four hundred twenty-eight million, two hundred sixty-nine thousand, seven hundred forty-five".