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2128037 = 8325639
BaseRepresentation
bin1000000111100010100101
311000010010012
420013202211
51021044122
6113340005
724042122
oct10074245
94003105
102128037
11122390a
12867605
135967c2
143d5749
152c07e2
hex2078a5

2128037 has 4 divisors (see below), whose sum is σ = 2153760. Its totient is φ = 2102316.

The previous prime is 2128031. The next prime is 2128039. The reversal of 2128037 is 7308212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2128037 - 26 = 2127973 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 (2128031) 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, 12737 + ... + 12902.

It is an arithmetic number, because the mean of its divisors is an integer number (538440).

22128037 is an apocalyptic number.

It is an amenable number.

2128037 is a deficient number, since it is larger than the sum of its proper divisors (25723).

2128037 is an equidigital number, since it uses as much as digits as its factorization.

2128037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25722.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 2128037 is about 1458.7792841962. The cubic root of 2128037 is about 128.6252972976.

The spelling of 2128037 in words is "two million, one hundred twenty-eight thousand, thirty-seven".

Divisors: 1 83 25639 2128037