428260805 has 16 divisors (see below), whose sum is σ = 612866304. Its totient is φ = 280896000.

The previous prime is 428260801. The next prime is 428260823. The reversal of 428260805 is 508062824.

It is not a de Polignac number, because 428260805 - 2² = 428260801 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428260801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265196 + ... + 266805.

It is an arithmetic number, because the mean of its divisors is an integer number (38304144).

Almost surely, 2^428260805 is an apocalyptic number.

It is an amenable number.

428260805 is a deficient number, since it is larger than the sum of its proper divisors (184605499).

428260805 is a wasteful number, since it uses less digits than its factorization.

428260805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532036.

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 428260805 is about 20694.4631483883. The cubic root of 428260805 is about 753.7652463347.

The spelling of 428260805 in words is "four hundred twenty-eight million, two hundred sixty thousand, eight hundred five".