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2981375 = 53172361
BaseRepresentation
bin1011010111110111111111
312121110200022
423113313333
51230401000
6143522355
734225025
oct13276777
95543608
102981375
111756a51
12bb93bb
13805037
14578715
153dd585
hex2d7dff

2981375 has 32 divisors (see below), whose sum is σ = 4178304. Its totient is φ = 2112000.

The previous prime is 2981371. The next prime is 2981383. The reversal of 2981375 is 5731892.

It is not a de Polignac number, because 2981375 - 22 = 2981371 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2981371) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48845 + ... + 48905.

It is an arithmetic number, because the mean of its divisors is an integer number (130572).

22981375 is an apocalyptic number.

2981375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2981375 is a deficient number, since it is larger than the sum of its proper divisors (1196929).

2981375 is a wasteful number, since it uses less digits than its factorization.

2981375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 106 counting only the distinct ones).

The product of its digits is 15120, while the sum is 35.

The square root of 2981375 is about 1726.6658622907. The cubic root of 2981375 is about 143.9258716976.

The spelling of 2981375 in words is "two million, nine hundred eighty-one thousand, three hundred seventy-five".

Divisors: 1 5 17 23 25 61 85 115 125 305 391 425 575 1037 1403 1525 1955 2125 2875 5185 7015 7625 9775 23851 25925 35075 48875 119255 129625 175375 596275 2981375