Search a number
-
+
980881 = 11233877
BaseRepresentation
bin11101111011110010001
31211211111221
43233132101
5222342011
633005041
711223466
oct3573621
91754457
10980881
1160aa50
123b3781
13284605
141b766d
15145971
hexef791

980881 has 8 divisors (see below), whose sum is σ = 1116864. Its totient is φ = 852720.

The previous prime is 980851. The next prime is 980887. The reversal of 980881 is 188089.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2k-980881 is a prime.

It is a super-2 number, since 2×9808812 = 1924255072322, which contains 22 as substring.

It is a Duffinian number.

980881 is a lucky number.

It is a plaindrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (980887) 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, 1686 + ... + 2191.

It is an arithmetic number, because the mean of its divisors is an integer number (139608).

2980881 is an apocalyptic number.

It is an amenable number.

980881 is a deficient number, since it is larger than the sum of its proper divisors (135983).

980881 is a wasteful number, since it uses less digits than its factorization.

980881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3911.

The product of its (nonzero) digits is 4608, while the sum is 34.

The square root of 980881 is about 990.3943658967. The cubic root of 980881 is about 99.3585947894.

It can be divided in two parts, 98088 and 1, that added together give a palindrome (98089).

The spelling of 980881 in words is "nine hundred eighty thousand, eight hundred eighty-one".

Divisors: 1 11 23 253 3877 42647 89171 980881