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BaseRepresentation
bin1001010011111011110001
311121000100101
421103323301
51111102240
6124152401
726514313
oct11237361
94530311
102440945
111417a11
12998701
13676060
144777b3
1533339a
hex253ef1

2440945 has 24 divisors (see below), whose sum is σ = 3412584. Its totient is φ = 1660416.

The previous prime is 2440943. The next prime is 2440951. The reversal of 2440945 is 5490442.

2440945 is a nontrivial binomial coefficient, being equal to C(2210, 2).

It can be written as a sum of positive squares in 4 ways, for example, as 178929 + 2262016 = 423^2 + 1504^2 .

It is not a de Polignac number, because 2440945 - 21 = 2440943 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2440943) 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 23 ways as a sum of consecutive naturals, for example, 51912 + ... + 51958.

It is an arithmetic number, because the mean of its divisors is an integer number (142191).

22440945 is an apocalyptic number.

2440945 is the 2209-th triangular number and also the 1105-th hexagonal number.

2440945 is the 737-th centered nonagonal number.

It is an amenable number.

2440945 is a deficient number, since it is larger than the sum of its proper divisors (971639).

2440945 is a wasteful number, since it uses less digits than its factorization.

2440945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 2440945 is about 1562.3523930279. The cubic root of 2440945 is about 134.6436877380.

The spelling of 2440945 in words is "two million, four hundred forty thousand, nine hundred forty-five".