1280060928 has 320 divisors, whose sum is σ = 4085452800. Its totient is φ = 394813440.

The previous prime is 1280060909. The next prime is 1280060939. The reversal of 1280060928 is 8290600821.

1280060928 = 12³ + 13³ + ... + 267³.

1280060928 is a `hidden beast` number, since 1 + 28 + 0 + 0 + 609 + 28 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 1280060892 and 1280060901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12427725 + ... + 12427827.

It is an arithmetic number, because the mean of its divisors is an integer number (12767040).

Almost surely, 2^1280060928 is an apocalyptic number.

1280060928 is a gapful number since it is divisible by the number (18) 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 1280060928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2042726400).

1280060928 is an abundant number, since it is smaller than the sum of its proper divisors (2805391872).

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

1280060928 is a wasteful number, since it uses less digits than its factorization.

1280060928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 1280060928 is about 35777.9391245499. The cubic root of 1280060928 is about 1085.7842738684.

The spelling of 1280060928 in words is "one billion, two hundred eighty million, sixty thousand, nine hundred twenty-eight".