1275448064 has 54 divisors (see below), whose sum is σ = 2781493596. Its totient is φ = 578887680.

The previous prime is 1275448051. The next prime is 1275448091. The reversal of 1275448064 is 4608445721.

It is a super-2 number, since 2×1275448064² = 3253535527922696192, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1894832 + ... + 1895504.

Almost surely, 2^1275448064 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 1275448064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1390746798).

1275448064 is an abundant number, since it is smaller than the sum of its proper divisors (1506045532).

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

1275448064 is an frugal number, since it uses more digits than its factorization.

1275448064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373 (or 686 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 41.

The square root of 1275448064 is about 35713.4157425469. The cubic root of 1275448064 is about 1084.4784496687.

The spelling of 1275448064 in words is "one billion, two hundred seventy-five million, four hundred forty-eight thousand, sixty-four".