Search a number
-
+
1028050172928 = 21032178098111
BaseRepresentation
bin11101111010111001001…
…00001011110000000000
310122021120120202211221200
432331130210023300000
5113320421321013203
62104140231021200
7134163020200602
oct16753444136000
93567516684850
101028050172928
11366aa2580a99
121472abb0a800
1375c387025bc
1437a87937172
151bb1e0dd9a3
hexef5c90bc00

1028050172928 has 264 divisors, whose sum is σ = 3147361738560. Its totient is φ = 322087157760.

The previous prime is 1028050172921. The next prime is 1028050172953. The reversal of 1028050172928 is 8292710508201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028050172921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126743593 + ... + 126751703.

Almost surely, 21028050172928 is an apocalyptic number.

1028050172928 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 1028050172928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1573680869280).

1028050172928 is an abundant number, since it is smaller than the sum of its proper divisors (2119311565632).

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

1028050172928 is a wasteful number, since it uses less digits than its factorization.

1028050172928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8963 (or 8942 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The spelling of 1028050172928 in words is "one trillion, twenty-eight billion, fifty million, one hundred seventy-two thousand, nine hundred twenty-eight".