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3142818 = 232724943
BaseRepresentation
bin1011111111010010100010
312220200010200
423333102202
51301032233
6151210030
735466510
oct13772242
95820120
103142818
111857278
121076916
13860673
145bb4b0
15421313
hex2ff4a2

3142818 has 24 divisors (see below), whose sum is σ = 7782528. Its totient is φ = 897912.

The previous prime is 3142813. The next prime is 3142819. The reversal of 3142818 is 8182413.

It is a super-2 number, since 2×31428182 = 19754609962248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3142791 and 3142800.

It is not an unprimeable number, because it can be changed into a prime (3142813) 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, 12346 + ... + 12597.

It is an arithmetic number, because the mean of its divisors is an integer number (324272).

Almost surely, 23142818 is an apocalyptic number.

3142818 is an abundant number, since it is smaller than the sum of its proper divisors (4639710).

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

3142818 is a wasteful number, since it uses less digits than its factorization.

3142818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24958 (or 24955 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 3142818 is about 1772.7994810469. The cubic root of 3142818 is about 146.4782279223.

It can be divided in two parts, 31 and 42818, that added together give a square (42849 = 2072).

The spelling of 3142818 in words is "three million, one hundred forty-two thousand, eight hundred eighteen".

Divisors: 1 2 3 6 7 9 14 18 21 42 63 126 24943 49886 74829 149658 174601 224487 349202 448974 523803 1047606 1571409 3142818