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2808252 = 223278007
BaseRepresentation
bin1010101101100110111100
312021200012100
422231212330
51204331002
6140105100
732604216
oct12554674
95250170
102808252
111648977
12b35190
137742b5
145315b6
153a711c
hex2ad9bc

2808252 has 18 divisors (see below), whose sum is σ = 7098728. Its totient is φ = 936072.

The previous prime is 2808251. The next prime is 2808269. The reversal of 2808252 is 2528082.

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2808251) 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 5 ways as a sum of consecutive naturals, for example, 38968 + ... + 39039.

22808252 is an apocalyptic number.

It is an amenable number.

2808252 is an abundant number, since it is smaller than the sum of its proper divisors (4290476).

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

2808252 is a wasteful number, since it uses less digits than its factorization.

2808252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78017 (or 78012 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 2808252 is about 1675.7839956271. The cubic root of 2808252 is about 141.0843014813.

The spelling of 2808252 in words is "two million, eight hundred eight thousand, two hundred fifty-two".

Divisors: 1 2 3 4 6 9 12 18 36 78007 156014 234021 312028 468042 702063 936084 1404126 2808252