1284272064 has 112 divisors (see below), whose sum is σ = 3827617440. Its totient is φ = 422184960.

The previous prime is 1284272053. The next prime is 1284272071. The reversal of 1284272064 is 4602724821.

1284272064 is a `hidden beast` number, since 1 + 28 + 427 + 206 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121054 + ... + 131234.

Almost surely, 2^1284272064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1284272064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1913808720).

1284272064 is an abundant number, since it is smaller than the sum of its proper divisors (2543345376).

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

1284272064 is a wasteful number, since it uses less digits than its factorization.

1284272064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10275 (or 10259 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 1284272064 is about 35836.7418161864. The cubic root of 1284272064 is about 1086.9736392131.

Adding to 1284272064 its reverse (4602724821), we get a palindrome (5886996885).

The spelling of 1284272064 in words is "one billion, two hundred eighty-four million, two hundred seventy-two thousand, sixty-four".