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2680423 = 12772099
BaseRepresentation
bin1010001110011001100111
312001011211221
422032121213
51141233143
6133241211
731532434
oct12163147
95034757
102680423
111570929
12a93207
1372b065
144dab8b
1537e2ed
hex28e667

2680423 has 4 divisors (see below), whose sum is σ = 2683800. Its totient is φ = 2677048.

The previous prime is 2680421. The next prime is 2680427. The reversal of 2680423 is 3240862.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3240862 = 21620431.

It is a cyclic number.

It is not a de Polignac number, because 2680423 - 21 = 2680421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2680421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228 + ... + 2326.

It is an arithmetic number, because the mean of its divisors is an integer number (670950).

22680423 is an apocalyptic number.

2680423 is a deficient number, since it is larger than the sum of its proper divisors (3377).

2680423 is a wasteful number, since it uses less digits than its factorization.

2680423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3376.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 2680423 is about 1637.1997434644. The cubic root of 2680423 is about 138.9102987321.

The spelling of 2680423 in words is "two million, six hundred eighty thousand, four hundred twenty-three".

Divisors: 1 1277 2099 2680423