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2880725 = 52611889
BaseRepresentation
bin1010111111010011010101
312102100121112
422333103111
51214140400
6141424405
733325421
oct12772325
95370545
102880725
111698371
12b6b105
1379b293
1454db81
153bd835
hex2bf4d5

2880725 has 12 divisors (see below), whose sum is σ = 3632580. Its totient is φ = 2265600.

The previous prime is 2880719. The next prime is 2880733. The reversal of 2880725 is 5270882.

It can be written as a sum of positive squares in 6 ways, for example, as 552049 + 2328676 = 743^2 + 1526^2 .

It is not a de Polignac number, because 2880725 - 28 = 2880469 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2880691 and 2880700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 581 + ... + 2469.

It is an arithmetic number, because the mean of its divisors is an integer number (302715).

22880725 is an apocalyptic number.

2880725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2880725 is a deficient number, since it is larger than the sum of its proper divisors (751855).

2880725 is a wasteful number, since it uses less digits than its factorization.

2880725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1960 (or 1955 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 2880725 is about 1697.2698665799. The cubic root of 2880725 is about 142.2876698245.

The spelling of 2880725 in words is "two million, eight hundred eighty thousand, seven hundred twenty-five".

Divisors: 1 5 25 61 305 1525 1889 9445 47225 115229 576145 2880725