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2742961 = 13257821
BaseRepresentation
bin1010011101101010110001
312011100122011
422131222301
51200233321
6134442521
732212654
oct12355261
95140564
102742961
111603911
12b03441
13750670
1451589b
15392ae1
hex29dab1

2742961 has 8 divisors (see below), whose sum is σ = 2969064. Its totient is φ = 2519040.

The previous prime is 2742953. The next prime is 2742977. The reversal of 2742961 is 1692472.

It can be written as a sum of positive squares in 4 ways, for example, as 435600 + 2307361 = 660^2 + 1519^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2742961 - 23 = 2742953 is a prime.

It is a d-powerful number, because it can be written as 23 + 7 + 410 + 213 + 94 + 68 + 1 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2742931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2931 + ... + 3751.

It is an arithmetic number, because the mean of its divisors is an integer number (371133).

22742961 is an apocalyptic number.

It is an amenable number.

2742961 is a deficient number, since it is larger than the sum of its proper divisors (226103).

2742961 is a wasteful number, since it uses less digits than its factorization.

2742961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091.

The product of its digits is 6048, while the sum is 31.

The square root of 2742961 is about 1656.1886969787. The cubic root of 2742961 is about 139.9823277013.

The spelling of 2742961 in words is "two million, seven hundred forty-two thousand, nine hundred sixty-one".

Divisors: 1 13 257 821 3341 10673 210997 2742961