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2878030 = 252771039
BaseRepresentation
bin1010111110101001001110
312102012220201
422332221032
51214044110
6141404114
733314521
oct12765116
95365821
102878030
111696341
12b6963a
13799c9c
1454cbb8
153bcb3a
hex2bea4e

2878030 has 16 divisors (see below), whose sum is σ = 5204160. Its totient is φ = 1145952.

The previous prime is 2878027. The next prime is 2878037. The reversal of 2878030 is 308782.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2878030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2878037) 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 7 ways as a sum of consecutive naturals, for example, 2251 + ... + 3289.

It is an arithmetic number, because the mean of its divisors is an integer number (325260).

22878030 is an apocalyptic number.

2878030 is a deficient number, since it is larger than the sum of its proper divisors (2326130).

2878030 is a wasteful number, since it uses less digits than its factorization.

2878030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 2878030 is about 1696.4757587422. The cubic root of 2878030 is about 142.2432845958.

The spelling of 2878030 in words is "two million, eight hundred seventy-eight thousand, thirty".

Divisors: 1 2 5 10 277 554 1039 1385 2078 2770 5195 10390 287803 575606 1439015 2878030