Search a number
-
+
1028211183830 = 25731408508471
BaseRepresentation
bin11101111011001100010…
…10011001000011010110
310122021222210202001101102
432331212022121003112
5113321234030340310
62104204222030102
7134200013600255
oct16754612310326
93567883661342
101028211183830
11367075453956
12147335a18332
1375c62b8821c
1437aa108a79c
151bb2d2e58a5
hexef662990d6

1028211183830 has 16 divisors (see below), whose sum is σ = 1876133284704. Its totient is φ = 405650439360.

The previous prime is 1028211183799. The next prime is 1028211183833. The reversal of 1028211183830 is 383811128201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028211183833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 704253506 + ... + 704254965.

It is an arithmetic number, because the mean of its divisors is an integer number (117258330294).

Almost surely, 21028211183830 is an apocalyptic number.

1028211183830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1028211183830 is a deficient number, since it is larger than the sum of its proper divisors (847922100874).

1028211183830 is a wasteful number, since it uses less digits than its factorization.

1028211183830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408508551.

The product of its (nonzero) digits is 18432, while the sum is 38.

The spelling of 1028211183830 in words is "one trillion, twenty-eight billion, two hundred eleven million, one hundred eighty-three thousand, eight hundred thirty".

Divisors: 1 2 5 10 73 146 365 730 1408508471 2817016942 7042542355 14085084710 102821118383 205642236766 514105591915 1028211183830