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6994980 = 2232538861
BaseRepresentation
bin11010101011110000100100
3111011101022100
4122223300210
53242314410
6405532100
7113312346
oct32536044
914141270
106994980
113a48483
122414030
1315abb55
14d01296
159328c0
hex6abc24

6994980 has 36 divisors (see below), whose sum is σ = 21218652. Its totient is φ = 1865280.

The previous prime is 6994951. The next prime is 6994987. The reversal of 6994980 is 894996.

It can be written as a sum of positive squares in 2 ways, for example, as 4485924 + 2509056 = 2118^2 + 1584^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (6994987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19251 + ... + 19610.

It is an arithmetic number, because the mean of its divisors is an integer number (589407).

Almost surely, 26994980 is an apocalyptic number.

6994980 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6994980 is an abundant number, since it is smaller than the sum of its proper divisors (14223672).

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

6994980 is a wasteful number, since it uses less digits than its factorization.

6994980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38876 (or 38871 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 6994980 is about 2644.8024500896. The cubic root of 6994980 is about 191.2473791772.

The spelling of 6994980 in words is "six million, nine hundred ninety-four thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 38861 77722 116583 155444 194305 233166 349749 388610 466332 582915 699498 777220 1165830 1398996 1748745 2331660 3497490 6994980