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2106839 = 7300977
BaseRepresentation
bin1000000010010111010111
310222001001002
420002113113
51014404324
6113053515
723623250
oct10022727
93861032
102106839
111209999
1285729b
13589c67
143cbb27
152b93ae
hex2025d7

2106839 has 4 divisors (see below), whose sum is σ = 2407824. Its totient is φ = 1805856.

The previous prime is 2106833. The next prime is 2106847. The reversal of 2106839 is 9386012.

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 2106839 - 220 = 1058263 is a prime.

It is a d-powerful number, because it can be written as 213 + 1 + 0 + 62 + 87 + 36 + 93 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2106833) 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, 150482 + ... + 150495.

It is an arithmetic number, because the mean of its divisors is an integer number (601956).

22106839 is an apocalyptic number.

2106839 is a deficient number, since it is larger than the sum of its proper divisors (300985).

2106839 is an equidigital number, since it uses as much as digits as its factorization.

2106839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300984.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 2106839 is about 1451.4954357489. The cubic root of 2106839 is about 128.1967798465.

The spelling of 2106839 in words is "two million, one hundred six thousand, eight hundred thirty-nine".

Divisors: 1 7 300977 2106839