1282305428 has 12 divisors (see below), whose sum is σ = 2244657492. Its totient is φ = 640974720.

The previous prime is 1282305379. The next prime is 1282305433. The reversal of 1282305428 is 8245032821.

It can be written as a sum of positive squares in 2 ways, for example, as 726194704 + 556110724 = 26948^2 + 23582^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27575 + ... + 57662.

It is an arithmetic number, because the mean of its divisors is an integer number (187054791).

Almost surely, 2^1282305428 is an apocalyptic number.

It is an amenable number.

1282305428 is a deficient number, since it is larger than the sum of its proper divisors (962352064).

1282305428 is a wasteful number, since it uses less digits than its factorization.

1282305428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89002 (or 89000 counting only the distinct ones).

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

The square root of 1282305428 is about 35809.2924811424. The cubic root of 1282305428 is about 1086.4185196659.

The spelling of 1282305428 in words is "one billion, two hundred eighty-two million, three hundred five thousand, four hundred twenty-eight".