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2872849 = 7974231
BaseRepresentation
bin1010111101011000010001
312101221210211
422331120101
51213412344
6141324121
733263440
oct12753021
95357724
102872849
111692461
12b66641
13797815
1454ad57
153bb334
hex2bd611

2872849 has 8 divisors (see below), whose sum is σ = 3317888. Its totient is φ = 2436480.

The previous prime is 2872823. The next prime is 2872853. The reversal of 2872849 is 9482782.

2872849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2872849 - 25 = 2872817 is a prime.

It is a super-2 number, since 2×28728492 = 16506522753602, which contains 22 as substring.

2872849 is a lucky number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2872889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1437 + ... + 2794.

It is an arithmetic number, because the mean of its divisors is an integer number (414736).

22872849 is an apocalyptic number.

It is an amenable number.

2872849 is a deficient number, since it is larger than the sum of its proper divisors (445039).

2872849 is an equidigital number, since it uses as much as digits as its factorization.

2872849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4335.

The product of its digits is 64512, while the sum is 40.

The square root of 2872849 is about 1694.9480818007. The cubic root of 2872849 is about 142.1578783603.

It can be divided in two parts, 2872 and 849, that added together give a square (3721 = 612).

The spelling of 2872849 in words is "two million, eight hundred seventy-two thousand, eight hundred forty-nine".

Divisors: 1 7 97 679 4231 29617 410407 2872849