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2987149 = 11443613
BaseRepresentation
bin1011011001010010001101
312121202121011
423121102031
51231042044
6144005221
734250614
oct13312215
95552534
102987149
111760320
121000811
13807859
1457a87b
153e0134
hex2d948d

2987149 has 8 divisors (see below), whose sum is σ = 3271392. Its totient is φ = 2705040.

The previous prime is 2987147. The next prime is 2987207. The reversal of 2987149 is 9417892.

2987149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2987149 - 21 = 2987147 is a prime.

It is an Ulam 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 (2987141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4567 + ... + 5179.

It is an arithmetic number, because the mean of its divisors is an integer number (408924).

22987149 is an apocalyptic number.

It is an amenable number.

2987149 is a deficient number, since it is larger than the sum of its proper divisors (284243).

2987149 is a wasteful number, since it uses less digits than its factorization.

2987149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067.

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

The square root of 2987149 is about 1728.3370620339. The cubic root of 2987149 is about 144.0187250598.

It can be divided in two parts, 2987 and 149, that added together give a square (3136 = 562).

The spelling of 2987149 in words is "two million, nine hundred eighty-seven thousand, one hundred forty-nine".

Divisors: 1 11 443 613 4873 6743 271559 2987149