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2870042281 = 23124784447
BaseRepresentation
bin1010101100010001…
…0101111010101001
321102000111020212021
42223010111322221
521334212323111
61152442544441
7131056646131
oct25304257251
97360436767
102870042281
111243078277
12681208121
133697b2092
141d3257ac1
1511be72d71
hexab115ea9

2870042281 has 4 divisors (see below), whose sum is σ = 2994826752. Its totient is φ = 2745257812.

The previous prime is 2870042269. The next prime is 2870042291. The reversal of 2870042281 is 1822400782.

2870042281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2k-2870042281 is a prime.

It is a super-2 number, since 2×28700422812 = 16474285389455365922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2870042291) 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, 62392201 + ... + 62392246.

It is an arithmetic number, because the mean of its divisors is an integer number (748706688).

Almost surely, 22870042281 is an apocalyptic number.

It is an amenable number.

2870042281 is a deficient number, since it is larger than the sum of its proper divisors (124784471).

2870042281 is a wasteful number, since it uses less digits than its factorization.

2870042281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124784470.

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 2870042281 is about 53572.7755581135. The cubic root of 2870042281 is about 1421.1156809169.

The spelling of 2870042281 in words is "two billion, eight hundred seventy million, forty-two thousand, two hundred eighty-one".

Divisors: 1 23 124784447 2870042281