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2881069 = 2939833
BaseRepresentation
bin1010111111011000101101
312102101002021
422333120231
51214143234
6141430141
733326422
oct12773055
95371067
102881069
111698654
12b6b351
1379b499
1454dd49
153bd9b4
hex2bf62d

2881069 has 4 divisors (see below), whose sum is σ = 2891196. Its totient is φ = 2870944.

The previous prime is 2881061. The next prime is 2881097. The reversal of 2881069 is 9601882.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9601882 = 24800941.

It can be written as a sum of positive squares in 2 ways, for example, as 2220100 + 660969 = 1490^2 + 813^2 .

It is a cyclic number.

It is not a de Polignac number, because 2881069 - 23 = 2881061 is a prime.

It is a super-2 number, since 2×28810692 = 16601117165522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2881061) 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, 4624 + ... + 5209.

It is an arithmetic number, because the mean of its divisors is an integer number (722799).

22881069 is an apocalyptic number.

It is an amenable number.

2881069 is a deficient number, since it is larger than the sum of its proper divisors (10127).

2881069 is an equidigital number, since it uses as much as digits as its factorization.

2881069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10126.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 2881069 is about 1697.3712027721. The cubic root of 2881069 is about 142.2933333305.

The spelling of 2881069 in words is "two million, eight hundred eighty-one thousand, sixty-nine".

Divisors: 1 293 9833 2881069