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2989471 = 23592203
BaseRepresentation
bin1011011001110110011111
312121212210011
423121312133
51231130341
6144024051
734260442
oct13316637
95555704
102989471
111762041
121002027
13808924
1457b659
153e0b81
hex2d9d9f

2989471 has 8 divisors (see below), whose sum is σ = 3173760. Its totient is φ = 2809752.

The previous prime is 2989451. The next prime is 2989487. The reversal of 2989471 is 1749892.

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 2989471 - 215 = 2956703 is a prime.

It is a super-3 number, since 3×29894713 = 80150140713977202333, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2989451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256 + ... + 2458.

It is an arithmetic number, because the mean of its divisors is an integer number (396720).

22989471 is an apocalyptic number.

2989471 is a deficient number, since it is larger than the sum of its proper divisors (184289).

2989471 is a wasteful number, since it uses less digits than its factorization.

2989471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2285.

The product of its digits is 36288, while the sum is 40.

The square root of 2989471 is about 1729.0086755132. The cubic root of 2989471 is about 144.0560320782.

The spelling of 2989471 in words is "two million, nine hundred eighty-nine thousand, four hundred seventy-one".

Divisors: 1 23 59 1357 2203 50669 129977 2989471