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2988155 = 52512381
BaseRepresentation
bin1011011001100001111011
312121210222102
423121201323
51231110110
6144014015
734253552
oct13314173
95553872
102988155
111761055
12100130b
13808151
1457ad99
153e05a5
hex2d987b

2988155 has 8 divisors (see below), whose sum is σ = 3601584. Its totient is φ = 2380000.

The previous prime is 2988151. The next prime is 2988169. The reversal of 2988155 is 5518892.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2988155 - 22 = 2988151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2988151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65 + ... + 2445.

It is an arithmetic number, because the mean of its divisors is an integer number (450198).

22988155 is an apocalyptic number.

2988155 is a deficient number, since it is larger than the sum of its proper divisors (613429).

2988155 is a wasteful number, since it uses less digits than its factorization.

2988155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2637.

The product of its digits is 28800, while the sum is 38.

The square root of 2988155 is about 1728.6280687297. The cubic root of 2988155 is about 144.0348905938.

The spelling of 2988155 in words is "two million, nine hundred eighty-eight thousand, one hundred fifty-five".

Divisors: 1 5 251 1255 2381 11905 597631 2988155