1282565772 has 96 divisors (see below), whose sum is σ = 3439376640. Its totient is φ = 413043840.

The previous prime is 1282565749. The next prime is 1282565807. The reversal of 1282565772 is 2775652821.

1282565772 is a `hidden beast` number, since 1 + 2 + 82 + 565 + 7 + 7 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 472443 + ... + 475149.

It is an arithmetic number, because the mean of its divisors is an integer number (35826840).

Almost surely, 2^1282565772 is an apocalyptic number.

1282565772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1282565772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1719688320).

1282565772 is an abundant number, since it is smaller than the sum of its proper divisors (2156810868).

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

1282565772 is a wasteful number, since it uses less digits than its factorization.

1282565772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2868 (or 2860 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The square root of 1282565772 is about 35812.9274424753. The cubic root of 1282565772 is about 1086.4920391768.

The spelling of 1282565772 in words is "one billion, two hundred eighty-two million, five hundred sixty-five thousand, seven hundred seventy-two".