1028404151280 has 640 divisors, whose sum is σ = 4191481728000. Its totient is φ = 228918067200.

The previous prime is 1028404151249. The next prime is 1028404151347. The reversal of 1028404151280 is 821514048201.

1028404151280 is a `hidden beast` number, since 1 + 0 + 28 + 4 + 0 + 41 + 512 + 80 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 16529671 + ... + 16591769.

It is an arithmetic number, because the mean of its divisors is an integer number (6549190200).

Almost surely, 2^{1028404151280} is an apocalyptic number.

1028404151280 is a gapful number since it is divisible by the number (10) 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 1028404151280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2095740864000).

1028404151280 is an abundant number, since it is smaller than the sum of its proper divisors (3163077576720).

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

1028404151280 is a wasteful number, since it uses less digits than its factorization.

1028404151280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62190 (or 62178 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

Adding to 1028404151280 its reverse (821514048201), we get a palindrome (1849918199481).

The spelling of 1028404151280 in words is "one trillion, twenty-eight billion, four hundred four million, one hundred fifty-one thousand, two hundred eighty".