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2427681 = 33721871
BaseRepresentation
bin1001010000101100100001
311120100011010
421100230201
51110141211
6124011133
726430534
oct11205441
94510133
102427681
111408a53
12990aa9
1366ccc9
14472a1b
1532e4a6
hex250b21

2427681 has 8 divisors (see below), whose sum is σ = 3324544. Its totient is φ = 1574640.

The previous prime is 2427647. The next prime is 2427683. The reversal of 2427681 is 1867242.

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

It is not a de Polignac number, because 2427681 - 213 = 2419489 is a prime.

It is a super-2 number, since 2×24276812 = 11787270075522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2427683) 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, 10825 + ... + 11046.

It is an arithmetic number, because the mean of its divisors is an integer number (415568).

22427681 is an apocalyptic number.

It is an amenable number.

2427681 is a deficient number, since it is larger than the sum of its proper divisors (896863).

2427681 is a wasteful number, since it uses less digits than its factorization.

2427681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21911.

The product of its digits is 5376, while the sum is 30.

The square root of 2427681 is about 1558.1017296698. The cubic root of 2427681 is about 134.3993617990.

The spelling of 2427681 in words is "two million, four hundred twenty-seven thousand, six hundred eighty-one".

Divisors: 1 3 37 111 21871 65613 809227 2427681