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2920280 = 235116637
BaseRepresentation
bin1011001000111101011000
312111100212112
423020331120
51221422110
6142331452
733551636
oct13107530
95440775
102920280
111715060
12b89b88
137b329c
14560356
153ca405
hex2c8f58

2920280 has 32 divisors (see below), whose sum is σ = 7169040. Its totient is φ = 1061760.

The previous prime is 2920279. The next prime is 2920289. The reversal of 2920280 is 820292.

2920280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2920289) 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, 2879 + ... + 3758.

22920280 is an apocalyptic number.

2920280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2920280 is an abundant number, since it is smaller than the sum of its proper divisors (4248760).

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

2920280 is a wasteful number, since it uses less digits than its factorization.

2920280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6659 (or 6655 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 2920280 is about 1708.8826759026. The cubic root of 2920280 is about 142.9359584135.

The spelling of 2920280 in words is "two million, nine hundred twenty thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 11 20 22 40 44 55 88 110 220 440 6637 13274 26548 33185 53096 66370 73007 132740 146014 265480 292028 365035 584056 730070 1460140 2920280