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2980891 = 191511039
BaseRepresentation
bin1011010111110000011011
312121110000101
423113300123
51230342031
6143520231
734223434
oct13276033
95543011
102980891
111756651
12bb9077
13804a54
1457848b
153dd361
hex2d7c1b

2980891 has 8 divisors (see below), whose sum is σ = 3161600. Its totient is φ = 2802600.

The previous prime is 2980883. The next prime is 2980903. The reversal of 2980891 is 1980892.

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

It is a cyclic number.

It is not a de Polignac number, because 2980891 - 23 = 2980883 is a prime.

It is a super-2 number, since 2×29808912 = 17771422307762, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2980891.

It is not an unprimeable number, because it can be changed into a prime (2980801) 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, 2350 + ... + 3388.

It is an arithmetic number, because the mean of its divisors is an integer number (395200).

22980891 is an apocalyptic number.

2980891 is a deficient number, since it is larger than the sum of its proper divisors (180709).

2980891 is a wasteful number, since it uses less digits than its factorization.

2980891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209.

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 2980891 is about 1726.5257020966. The cubic root of 2980891 is about 143.9180829098.

Subtracting from 2980891 its reverse (1980892), we obtain a palindrome (999999).

The spelling of 2980891 in words is "two million, nine hundred eighty thousand, eight hundred ninety-one".

Divisors: 1 19 151 1039 2869 19741 156889 2980891