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2872049 = 8334603
BaseRepresentation
bin1010111101001011110001
312101220201012
422331023301
51213401144
6141320305
733261215
oct12751361
95356635
102872049
1116918a4
12b66095
1379734b
1454a945
153bae9e
hex2bd2f1

2872049 has 4 divisors (see below), whose sum is σ = 2906736. Its totient is φ = 2837364.

The previous prime is 2872043. The next prime is 2872069. The reversal of 2872049 is 9402782.

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: 9402782 = 24701391.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2872049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2872043) 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, 17219 + ... + 17384.

It is an arithmetic number, because the mean of its divisors is an integer number (726684).

22872049 is an apocalyptic number.

It is an amenable number.

2872049 is a deficient number, since it is larger than the sum of its proper divisors (34687).

2872049 is an equidigital number, since it uses as much as digits as its factorization.

2872049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34686.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 2872049 is about 1694.7120699399. The cubic root of 2872049 is about 142.1446816044.

The spelling of 2872049 in words is "two million, eight hundred seventy-two thousand, forty-nine".

Divisors: 1 83 34603 2872049