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8829981 = 321099001
BaseRepresentation
bin100001101011…
…110000011101
3121121121110100
4201223300131
54230024411
6513131313
7135024246
oct41536035
917547410
108829981
114a91106
122b59b39
131aa2154
14125bccd
15b96456
hex86bc1d

8829981 has 12 divisors (see below), whose sum is σ = 12872860. Its totient is φ = 5832000.

The previous prime is 8829973. The next prime is 8829983. The reversal of 8829981 is 1899288.

8829981 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3767481 + 5062500 = 1941^2 + 2250^2 .

It is not a de Polignac number, because 8829981 - 23 = 8829973 is a prime.

It is a super-2 number, since 2×88299812 = 155937128920722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8829983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3520 + ... + 5481.

Almost surely, 28829981 is an apocalyptic number.

It is an amenable number.

8829981 is a deficient number, since it is larger than the sum of its proper divisors (4042879).

8829981 is a wasteful number, since it uses less digits than its factorization.

8829981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9116 (or 9113 counting only the distinct ones).

The product of its digits is 82944, while the sum is 45.

The square root of 8829981 is about 2971.5283946145. The cubic root of 8829981 is about 206.6902178618.

It can be divided in two parts, 8829 and 981, that multiplied together give a square (8661249 = 29432).

The spelling of 8829981 in words is "eight million, eight hundred twenty-nine thousand, nine hundred eighty-one".

Divisors: 1 3 9 109 327 981 9001 27003 81009 981109 2943327 8829981