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2989908 = 2232232157
BaseRepresentation
bin1011011001111101010100
312121220101100
423121331110
51231134113
6144030100
734261635
oct13317524
95556340
102989908
1117623a9
121002330
13808b9c
1457b88c
153e0d73
hex2d9f54

2989908 has 54 divisors (see below), whose sum is σ = 7951034. Its totient is φ = 947232.

The previous prime is 2989879. The next prime is 2989927. The reversal of 2989908 is 8099892.

It can be written as a sum of positive squares in only one way, i.e., 2304324 + 685584 = 1518^2 + 828^2 .

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 18966 + ... + 19122.

22989908 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2989908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3975517).

2989908 is an abundant number, since it is smaller than the sum of its proper divisors (4961126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2989908 is a wasteful number, since it uses less digits than its factorization.

2989908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 2989908 is about 1729.1350438876. The cubic root of 2989908 is about 144.0630510925.

The spelling of 2989908 in words is "two million, nine hundred eighty-nine thousand, nine hundred eight".

Divisors: 1 2 3 4 6 9 12 18 23 36 46 69 92 138 157 207 276 314 414 471 529 628 828 942 1058 1413 1587 1884 2116 2826 3174 3611 4761 5652 6348 7222 9522 10833 14444 19044 21666 32499 43332 64998 83053 129996 166106 249159 332212 498318 747477 996636 1494954 2989908