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2890129 = 11262739
BaseRepresentation
bin1011000001100110010001
312102211111211
423001212101
51214441004
6141540121
733365014
oct13014621
95384454
102890129
1116a4440
12b74641
137a2648
1455337b
153c1504
hex2c1991

2890129 has 4 divisors (see below), whose sum is σ = 3152880. Its totient is φ = 2627380.

The previous prime is 2890127. The next prime is 2890141. The reversal of 2890129 is 9210982.

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 2890129 - 21 = 2890127 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2890129.

It is not an unprimeable number, because it can be changed into a prime (2890127) 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, 131359 + ... + 131380.

It is an arithmetic number, because the mean of its divisors is an integer number (788220).

22890129 is an apocalyptic number.

It is an amenable number.

2890129 is a deficient number, since it is larger than the sum of its proper divisors (262751).

2890129 is a wasteful number, since it uses less digits than its factorization.

2890129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262750.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 2890129 is about 1700.0379407531. The cubic root of 2890129 is about 142.4423322624.

The spelling of 2890129 in words is "two million, eight hundred ninety thousand, one hundred twenty-nine".

Divisors: 1 11 262739 2890129