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1820084 = 22765003
BaseRepresentation
bin110111100010110110100
310102110200112
412330112310
5431220314
6103002152
721320240
oct6742664
93373615
101820084
111033502
12739358
134b9596
14355420
1525e43e
hex1bc5b4

1820084 has 12 divisors (see below), whose sum is σ = 3640224. Its totient is φ = 780024.

The previous prime is 1820051. The next prime is 1820087. The reversal of 1820084 is 4800281.

1820084 is an admirable number.

It is a hoax number, since the sum of its digits (23) 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 (1820087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32474 + ... + 32529.

It is an arithmetic number, because the mean of its divisors is an integer number (303352).

21820084 is an apocalyptic number.

1820084 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1820084 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1820084 is a wasteful number, since it uses less digits than its factorization.

1820084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65014 (or 65012 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 1820084 is about 1349.1048884353. The cubic root of 1820084 is about 122.0947932983.

It can be divided in two parts, 18 and 20084, that added together give a palindrome (20102).

The spelling of 1820084 in words is "one million, eight hundred twenty thousand, eighty-four".

Divisors: 1 2 4 7 14 28 65003 130006 260012 455021 910042 1820084