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2987145 = 335729109
BaseRepresentation
bin1011011001010010001001
312121202121000
423121102021
51231042040
6144005213
734250610
oct13312211
95552530
102987145
111760317
121000809
13807855
1457a877
153e0130
hex2d9489

2987145 has 64 divisors (see below), whose sum is σ = 6336000. Its totient is φ = 1306368.

The previous prime is 2987143. The next prime is 2987147. The reversal of 2987145 is 5417892.

It is an interprime number because it is at equal distance from previous prime (2987143) and next prime (2987147).

It is not a de Polignac number, because 2987145 - 21 = 2987143 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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 polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 27351 + ... + 27459.

It is an arithmetic number, because the mean of its divisors is an integer number (99000).

22987145 is an apocalyptic number.

It is an amenable number.

2987145 is an abundant number, since it is smaller than the sum of its proper divisors (3348855).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2987145 is a wasteful number, since it uses less digits than its factorization.

2987145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 153 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 2987145 is about 1728.3359048518. The cubic root of 2987145 is about 144.0186607761.

The spelling of 2987145 in words is "two million, nine hundred eighty-seven thousand, one hundred forty-five".

Divisors: 1 3 5 7 9 15 21 27 29 35 45 63 87 105 109 135 145 189 203 261 315 327 435 545 609 763 783 945 981 1015 1305 1635 1827 2289 2943 3045 3161 3815 3915 4905 5481 6867 9135 9483 11445 14715 15805 20601 22127 27405 28449 34335 47415 66381 85347 103005 110635 142245 199143 331905 426735 597429 995715 2987145