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2158243 = 15114293
BaseRepresentation
bin1000001110111010100011
311001122112221
420032322203
51023030433
6114131511
724226153
oct10167243
94048487
102158243
11124457a
12880b97
135a7489
14402763
152c972d
hex20eea3

2158243 has 4 divisors (see below), whose sum is σ = 2172688. Its totient is φ = 2143800.

The previous prime is 2158237. The next prime is 2158259. The reversal of 2158243 is 3428512.

2158243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2158243 - 29 = 2157731 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (2158223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6996 + ... + 7297.

It is an arithmetic number, because the mean of its divisors is an integer number (543172).

22158243 is an apocalyptic number.

2158243 is a deficient number, since it is larger than the sum of its proper divisors (14445).

2158243 is a wasteful number, since it uses less digits than its factorization.

2158243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14444.

The product of its digits is 1920, while the sum is 25.

The square root of 2158243 is about 1469.0959805268. The cubic root of 2158243 is about 129.2310224336.

It can be divided in two parts, 2158 and 243, that added together give a 4-th power (2401 = 74).

The spelling of 2158243 in words is "two million, one hundred fifty-eight thousand, two hundred forty-three".

Divisors: 1 151 14293 2158243