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2870420489 = 14272011507
BaseRepresentation
bin1010101100010111…
…0010010000001001
321102001012110122222
42223011302100021
521334311423424
61152455023425
7131063112566
oct25305622011
97361173588
102870420489
111243306442
1268136ab75
133698b5281
141d331586d
1511bee9e5e
hexab172409

2870420489 has 4 divisors (see below), whose sum is σ = 2872433424. Its totient is φ = 2868407556.

The previous prime is 2870420477. The next prime is 2870420491. The reversal of 2870420489 is 9840240782.

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-2870420489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2870420419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1004327 + ... + 1007180.

It is an arithmetic number, because the mean of its divisors is an integer number (718108356).

Almost surely, 22870420489 is an apocalyptic number.

It is an amenable number.

2870420489 is a deficient number, since it is larger than the sum of its proper divisors (2012935).

2870420489 is a wasteful number, since it uses less digits than its factorization.

2870420489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2012934.

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 2870420489 is about 53576.3052944116. The cubic root of 2870420489 is about 1421.1781020312.

The spelling of 2870420489 in words is "two billion, eight hundred seventy million, four hundred twenty thousand, four hundred eighty-nine".

Divisors: 1 1427 2011507 2870420489