1264284528 has 80 divisors (see below), whose sum is σ = 3603165216. Its totient is φ = 379514880.

The previous prime is 1264284499. The next prime is 1264284557. The reversal of 1264284528 is 8254824621.

It is an interprime number because it is at equal distance from previous prime (1264284499) and next prime (1264284557).

It is a self number, because there is not a number n which added to its sum of digits gives 1264284528.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 876 + ... + 50292.

Almost surely, 2^1264284528 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 1264284528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1801582608).

1264284528 is an abundant number, since it is smaller than the sum of its proper divisors (2338880688).

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

1264284528 is a wasteful number, since it uses less digits than its factorization.

1264284528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49482 (or 49476 counting only the distinct ones).

The product of its digits is 245760, while the sum is 42.

The square root of 1264284528 is about 35556.7789317311. The cubic root of 1264284528 is about 1081.3051573631.

The spelling of 1264284528 in words is "one billion, two hundred sixty-four million, two hundred eighty-four thousand, five hundred twenty-eight".