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2980945 = 51183653
BaseRepresentation
bin1011010111110001010001
312121110002101
423113301101
51230342240
6143520401
734223542
oct13276121
95543071
102980945
1117566a0
12bb9101
13804a96
145784c9
153dd39a
hex2d7c51

2980945 has 16 divisors (see below), whose sum is σ = 3955392. Its totient is φ = 2138560.

The previous prime is 2980931. The next prime is 2980949. The reversal of 2980945 is 5490892.

It is not a de Polignac number, because 2980945 - 215 = 2948177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2980949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4239 + ... + 4891.

It is an arithmetic number, because the mean of its divisors is an integer number (247212).

22980945 is an apocalyptic number.

It is an amenable number.

2980945 is a deficient number, since it is larger than the sum of its proper divisors (974447).

2980945 is a wasteful number, since it uses less digits than its factorization.

2980945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 2980945 is about 1726.5413403681. The cubic root of 2980945 is about 143.9189519486.

The spelling of 2980945 in words is "two million, nine hundred eighty thousand, nine hundred forty-five".

Divisors: 1 5 11 55 83 415 653 913 3265 4565 7183 35915 54199 270995 596189 2980945