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2878069 = 5235503
BaseRepresentation
bin1010111110101001110101
312102012222011
422332221311
51214044234
6141404221
733314605
oct12765165
95365864
102878069
111696377
12b69671
13799ccc
1454cc05
153bcb64
hex2bea75

2878069 has 4 divisors (see below), whose sum is σ = 2884096. Its totient is φ = 2872044.

The previous prime is 2878067. The next prime is 2878093. The reversal of 2878069 is 9608782.

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 2878069 - 21 = 2878067 is a prime.

It is a super-2 number, since 2×28780692 = 16566562337522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2878067) 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, 2229 + ... + 3274.

It is an arithmetic number, because the mean of its divisors is an integer number (721024).

22878069 is an apocalyptic number.

It is an amenable number.

2878069 is a deficient number, since it is larger than the sum of its proper divisors (6027).

2878069 is an equidigital number, since it uses as much as digits as its factorization.

2878069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6026.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 2878069 is about 1696.4872531204. The cubic root of 2878069 is about 142.2439271028.

The spelling of 2878069 in words is "two million, eight hundred seventy-eight thousand, sixty-nine".

Divisors: 1 523 5503 2878069