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2885989 = 3318719
BaseRepresentation
bin1011000000100101100101
312102121211111
423000211211
51214322424
6141505021
733346651
oct13004545
95377744
102885989
1116a1317
12b72171
137a07b2
14551a61
153c0194
hex2c0965

2885989 has 4 divisors (see below), whose sum is σ = 2895040. Its totient is φ = 2876940.

The previous prime is 2885983. The next prime is 2886011. The reversal of 2885989 is 9895882.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2885989 - 219 = 2361701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2885983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4029 + ... + 4690.

It is an arithmetic number, because the mean of its divisors is an integer number (723760).

22885989 is an apocalyptic number.

It is an amenable number.

2885989 is a deficient number, since it is larger than the sum of its proper divisors (9051).

2885989 is an equidigital number, since it uses as much as digits as its factorization.

2885989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9050.

The product of its digits is 414720, while the sum is 49.

The square root of 2885989 is about 1698.8198845081. The cubic root of 2885989 is about 142.3742853506.

The spelling of 2885989 in words is "two million, eight hundred eighty-five thousand, nine hundred eighty-nine".

Divisors: 1 331 8719 2885989