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2801330 = 25725717
BaseRepresentation
bin1010101011111010110010
312021022200222
422223322302
51204120310
6140013042
732545100
oct12537262
95238628
102801330
111643754
12b31182
137710bc
1452cc70
153a5055
hex2abeb2

2801330 has 24 divisors (see below), whose sum is σ = 5866668. Its totient is φ = 960288.

The previous prime is 2801317. The next prime is 2801339. The reversal of 2801330 is 331082.

It can be written as a sum of positive squares in 2 ways, for example, as 2798929 + 2401 = 1673^2 + 49^2 .

It is a super-3 number, since 3×28013303 = 65949889383337911000, which contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2801299 and 2801308.

It is not an unprimeable number, because it can be changed into a prime (2801339) 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 11 ways as a sum of consecutive naturals, for example, 2369 + ... + 3348.

22801330 is an apocalyptic number.

2801330 is an abundant number, since it is smaller than the sum of its proper divisors (3065338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2801330 is a wasteful number, since it uses less digits than its factorization.

2801330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5738 (or 5731 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2801330 is about 1673.7174193991. The cubic root of 2801330 is about 140.9682875548.

The spelling of 2801330 in words is "two million, eight hundred one thousand, three hundred thirty".

Divisors: 1 2 5 7 10 14 35 49 70 98 245 490 5717 11434 28585 40019 57170 80038 200095 280133 400190 560266 1400665 2801330