1282665520 has 40 divisors (see below), whose sum is σ = 2985746400. Its totient is φ = 512455680.

The previous prime is 1282665511. The next prime is 1282665529. The reversal of 1282665520 is 255662821.

It is an interprime number because it is at equal distance from previous prime (1282665511) and next prime (1282665529).

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 1282665520.

It is not an unprimeable number, because it can be changed into a prime (1282665529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61381 + ... + 79579.

It is an arithmetic number, because the mean of its divisors is an integer number (74643660).

Almost surely, 2^1282665520 is an apocalyptic number.

1282665520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1282665520 is an abundant number, since it is smaller than the sum of its proper divisors (1703080880).

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

1282665520 is a wasteful number, since it uses less digits than its factorization.

1282665520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19093 (or 19087 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 1282665520 is about 35814.3200410115. The cubic root of 1282665520 is about 1086.5202047495.

The spelling of 1282665520 in words is "one billion, two hundred eighty-two million, six hundred sixty-five thousand, five hundred twenty".