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2988681 = 31952433
BaseRepresentation
bin1011011001101010001001
312121211200220
423121222021
51231114211
6144020253
734255233
oct13315211
95554626
102988681
111761493
121001689
13808467
1457b253
153e0806
hex2d9a89

2988681 has 8 divisors (see below), whose sum is σ = 4194720. Its totient is φ = 1887552.

The previous prime is 2988677. The next prime is 2988701. The reversal of 2988681 is 1868892.

2988681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2988681 - 22 = 2988677 is a prime.

It is a super-2 number, since 2×29886812 = 17864428239522, which contains 22 as substring.

2988681 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2988611) 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 7 ways as a sum of consecutive naturals, for example, 26160 + ... + 26273.

It is an arithmetic number, because the mean of its divisors is an integer number (524340).

22988681 is an apocalyptic number.

It is an amenable number.

2988681 is a deficient number, since it is larger than the sum of its proper divisors (1206039).

2988681 is a wasteful number, since it uses less digits than its factorization.

2988681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52455.

The product of its digits is 55296, while the sum is 42.

The square root of 2988681 is about 1728.7802058099. The cubic root of 2988681 is about 144.0433415061.

The spelling of 2988681 in words is "two million, nine hundred eighty-eight thousand, six hundred eighty-one".

Divisors: 1 3 19 57 52433 157299 996227 2988681