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2902989 = 3967663
BaseRepresentation
bin1011000100101111001101
312110111011010
423010233031
51220343424
6142115433
733450345
oct13045715
95414133
102902989
111703071
12b7bb79
137a845b
14557d25
153c5229
hex2c4bcd

2902989 has 4 divisors (see below), whose sum is σ = 3870656. Its totient is φ = 1935324.

The previous prime is 2902981. The next prime is 2902993. The reversal of 2902989 is 9892092.

2902989 is nontrivially palindromic in base 11.

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 not a de Polignac number, because 2902989 - 23 = 2902981 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2902981) 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, 483829 + ... + 483834.

It is an arithmetic number, because the mean of its divisors is an integer number (967664).

22902989 is an apocalyptic number.

It is an amenable number.

2902989 is a deficient number, since it is larger than the sum of its proper divisors (967667).

2902989 is an equidigital number, since it uses as much as digits as its factorization.

2902989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967666.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 2902989 is about 1703.8160111937. The cubic root of 2902989 is about 142.6532914888.

The spelling of 2902989 in words is "two million, nine hundred two thousand, nine hundred eighty-nine".

Divisors: 1 3 967663 2902989