1280448532120 has 32 divisors (see below), whose sum is σ = 2948009415120. Its totient is φ = 500268263040.

The previous prime is 1280448532117. The next prime is 1280448532159. The reversal of 1280448532120 is 212358440821.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372221691 + ... + 372225130.

Almost surely, 2^{1280448532120} is an apocalyptic number.

1280448532120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1280448532120 is an abundant number, since it is smaller than the sum of its proper divisors (1667560883000).

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

1280448532120 is a wasteful number, since it uses less digits than its factorization.

1280448532120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744446875 (or 744446871 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 40.

The spelling of 1280448532120 in words is "one trillion, two hundred eighty billion, four hundred forty-eight million, five hundred thirty-two thousand, one hundred twenty".