1282275920 has 20 divisors (see below), whose sum is σ = 2981291700. Its totient is φ = 512910336.

The previous prime is 1282275913. The next prime is 1282275961. The reversal of 1282275920 is 295722821.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 174451264 + 1107824656 = 13208^2 + 33284^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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, 8014145 + ... + 8014304.

It is an arithmetic number, because the mean of its divisors is an integer number (149064585).

Almost surely, 2^1282275920 is an apocalyptic number.

1282275920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1282275920 is an abundant number, since it is smaller than the sum of its proper divisors (1699015780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1282275920 is a wasteful number, since it uses less digits than its factorization.

1282275920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16028462 (or 16028456 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 1282275920 is about 35808.8804628126. The cubic root of 1282275920 is about 1086.4101861641.

The spelling of 1282275920 in words is "one billion, two hundred eighty-two million, two hundred seventy-five thousand, nine hundred twenty".