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2830744049 = 7404392007
BaseRepresentation
bin1010100010111001…
…1011100111110001
321022021112200211012
42220232123213301
521244132302144
61144520400305
7130101633050
oct25056334761
97267480735
102830744049
1112229769a1
12670016095
13361602aa3
141cbd48397
151187ade9e
hexa8b9b9f1

2830744049 has 4 divisors (see below), whose sum is σ = 3235136064. Its totient is φ = 2426352036.

The previous prime is 2830744043. The next prime is 2830744073. The reversal of 2830744049 is 9404470382.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9404470382 = 24702235191.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2830744049 is a prime.

It is a super-2 number, since 2×28307440492 = 16026223741897828802, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2830743997 and 2830744015.

It is not an unprimeable number, because it can be changed into a prime (2830744043) 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, 202195997 + ... + 202196010.

It is an arithmetic number, because the mean of its divisors is an integer number (808784016).

Almost surely, 22830744049 is an apocalyptic number.

It is an amenable number.

2830744049 is a deficient number, since it is larger than the sum of its proper divisors (404392015).

2830744049 is an equidigital number, since it uses as much as digits as its factorization.

2830744049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404392014.

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 2830744049 is about 53204.7370917290. The cubic root of 2830744049 is about 1414.5996110232.

The spelling of 2830744049 in words is "two billion, eight hundred thirty million, seven hundred forty-four thousand, forty-nine".

Divisors: 1 7 404392007 2830744049