Search a number
-
+
1230772810 = 25373326413
BaseRepresentation
bin100100101011100…
…0001101001001010
310011202220201220011
41021113001221022
510010034212220
6322043422134
742333252631
oct11127015112
93152821804
101230772810
11581814913
122a422494a
13167caa147
14b9660518
15730b865a
hex495c1a4a

1230772810 has 16 divisors (see below), whose sum is σ = 2275267176. Its totient is φ = 479003328.

The previous prime is 1230772801. The next prime is 1230772811. The reversal of 1230772810 is 182770321.

It can be written as a sum of positive squares in 4 ways, for example, as 871253289 + 359519521 = 29517^2 + 18961^2 .

It is a super-2 number, since 2×12307728102 = 3029603419670592200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1230772811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1662837 + ... + 1663576.

Almost surely, 21230772810 is an apocalyptic number.

1230772810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1230772810 is a deficient number, since it is larger than the sum of its proper divisors (1044494366).

1230772810 is a wasteful number, since it uses less digits than its factorization.

1230772810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3326457.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 1230772810 is about 35082.3717841311. The cubic root of 1230772810 is about 1071.6656185181.

The spelling of 1230772810 in words is "one billion, two hundred thirty million, seven hundred seventy-two thousand, eight hundred ten".

Divisors: 1 2 5 10 37 74 185 370 3326413 6652826 16632065 33264130 123077281 246154562 615386405 1230772810