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2528213 = 16715139
BaseRepresentation
bin1001101001001111010101
311202110001112
421221033111
51121400323
6130104405
730326612
oct11511725
94673045
102528213
111477536
12a1b105
136a69ac
1449b509
1534e178
hex2693d5

2528213 has 4 divisors (see below), whose sum is σ = 2543520. Its totient is φ = 2512908.

The previous prime is 2528167. The next prime is 2528221. The reversal of 2528213 is 3128252.

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 2528213 - 212 = 2524117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2528233) 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, 7403 + ... + 7736.

It is an arithmetic number, because the mean of its divisors is an integer number (635880).

22528213 is an apocalyptic number.

It is an amenable number.

2528213 is a deficient number, since it is larger than the sum of its proper divisors (15307).

2528213 is a wasteful number, since it uses less digits than its factorization.

2528213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15306.

The product of its digits is 960, while the sum is 23.

The square root of 2528213 is about 1590.0355341941. The cubic root of 2528213 is about 136.2295180053.

The spelling of 2528213 in words is "two million, five hundred twenty-eight thousand, two hundred thirteen".

Divisors: 1 167 15139 2528213