1264027512 has 64 divisors (see below), whose sum is σ = 3457209600. Its totient is φ = 381943040.

The previous prime is 1264027489. The next prime is 1264027529. The reversal of 1264027512 is 2157204621.

It is a self number, because there is not a number n which added to its sum of digits gives 1264027512.

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, 88108 + ... + 101444.

It is an arithmetic number, because the mean of its divisors is an integer number (54018900).

Almost surely, 2^1264027512 is an apocalyptic number.

1264027512 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 1264027512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1728604800).

1264027512 is an abundant number, since it is smaller than the sum of its proper divisors (2193182088).

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

1264027512 is a wasteful number, since it uses less digits than its factorization.

1264027512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13716 (or 13712 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 1264027512 is about 35553.1645848861. The cubic root of 1264027512 is about 1081.2318796700.

The spelling of 1264027512 in words is "one billion, two hundred sixty-four million, twenty-seven thousand, five hundred twelve".