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2195961 = 31076841
BaseRepresentation
bin1000011000000111111001
311010120021220
420120013321
51030232321
6115022253
724444135
oct10300771
94116256
102195961
11126a949
1289a989
135bb6b1
144123c5
152d59c6
hex2181f9

2195961 has 8 divisors (see below), whose sum is σ = 2955744. Its totient is φ = 1450080.

The previous prime is 2195933. The next prime is 2195969. The reversal of 2195961 is 1695912.

2195961 is an esthetic number in base 12, because in such base its adjacent digits differ by 1.

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

It is not a de Polignac number, because 2195961 - 213 = 2187769 is a prime.

It is a Curzon number.

2195961 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2195969) 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, 3100 + ... + 3741.

It is an arithmetic number, because the mean of its divisors is an integer number (369468).

22195961 is an apocalyptic number.

It is an amenable number.

2195961 is a deficient number, since it is larger than the sum of its proper divisors (759783).

2195961 is a wasteful number, since it uses less digits than its factorization.

2195961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6951.

The product of its digits is 4860, while the sum is 33.

The square root of 2195961 is about 1481.8775253036. The cubic root of 2195961 is about 129.9795036720.

The spelling of 2195961 in words is "two million, one hundred ninety-five thousand, nine hundred sixty-one".

Divisors: 1 3 107 321 6841 20523 731987 2195961