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2825761 = 414
BaseRepresentation
bin1010110001111000100001
312022120012211
422301320201
51210411021
6140322121
733006241
oct12617041
95276184
102825761
111660044
12b43341
1377c263
14537b21
153ac3e1
hex2b1e21

2825761 has 5 divisors (see below), whose sum is σ = 2896405. Its totient is φ = 2756840.

The previous prime is 2825759. The next prime is 2825773. The reversal of 2825761 is 1675282.

The square root of 2825761 is 1681.

It is a perfect power (a square, a biquadrate), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 2307361 + 518400 = 1519^2 + 720^2 .

It is not a de Polignac number, because 2825761 - 21 = 2825759 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2825701) by changing a digit.

It is a polite number, since it can be written in 4 ways as a sum of consecutive naturals, for example, 68901 + ... + 68941.

It is an arithmetic number, because the mean of its divisors is an integer number (579281).

22825761 is an apocalyptic number.

2825761 is the 1681-st square number.

2825761 is the 841-st centered octagonal number.

It is an amenable number.

2825761 is a deficient number, since it is larger than the sum of its proper divisors (70644).

2825761 is an frugal number, since it uses more digits than its factorization.

2825761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 41 counting only the distinct ones).

The product of its digits is 6720, while the sum is 31.

The cubic root of 2825761 is about 141.3769068557.

Subtracting from 2825761 its product of digits (6720), we obtain a square (2819041 = 16792).

The spelling of 2825761 in words is "two million, eight hundred twenty-five thousand, seven hundred sixty-one".

Divisors: 1 41 1681 68921 2825761