Search a number
-
+
1934881 = 1321072
BaseRepresentation
bin111011000011000100001
310122022011021
413120120201
5443404011
6105245441
722306024
oct7303041
93568137
101934881
111101783
12793881
13529900
143851bb
15283471
hex1d8621

1934881 has 9 divisors (see below), whose sum is σ = 2114931. Its totient is φ = 1769352.

The previous prime is 1934879. The next prime is 1934887. The reversal of 1934881 is 1884391.

It is a happy number.

The square root of 1934881 is 1391.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 286225 + 1648656 = 535^2 + 1284^2 .

It is not a de Polignac number, because 1934881 - 21 = 1934879 is a prime.

It is a super-2 number, since 2×19348812 = 7487528968322, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1934887) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 18030 + ... + 18136.

21934881 is an apocalyptic number.

1934881 is the 1391-st square number.

1934881 is the 696-th centered octagonal number.

It is an amenable number.

1934881 is a deficient number, since it is larger than the sum of its proper divisors (180050).

1934881 is an equidigital number, since it uses as much as digits as its factorization.

1934881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240 (or 120 counting only the distinct ones).

The product of its digits is 6912, while the sum is 34.

The cubic root of 1934881 is about 124.6095764921.

The spelling of 1934881 in words is "one million, nine hundred thirty-four thousand, eight hundred eighty-one".

Divisors: 1 13 107 169 1391 11449 18083 148837 1934881