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203230044 = 22325645279
BaseRepresentation
bin11000001110100…
…00101101011100
3112011102011012200
430013100231130
5404011330134
632055531500
75015266263
oct1407205534
9464364180
10203230044
11a4799816
1258089b90
1333148584
141cdc35da
1512c96499
hexc1d0b5c

203230044 has 18 divisors (see below), whose sum is σ = 513720480. Its totient is φ = 67743336.

The previous prime is 203230039. The next prime is 203230067. The reversal of 203230044 is 440032302.

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

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 203229999 and 203230026.

It is a congruent number.

It is an unprimeable number.

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, 2822604 + ... + 2822675.

Almost surely, 2203230044 is an apocalyptic number.

It is an amenable number.

203230044 is an abundant number, since it is smaller than the sum of its proper divisors (310490436).

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

203230044 is a wasteful number, since it uses less digits than its factorization.

203230044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5645289 (or 5645284 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 203230044 is about 14255.8775247264. The cubic root of 203230044 is about 587.9349851759.

Adding to 203230044 its reverse (440032302), we get a palindrome (643262346).

The spelling of 203230044 in words is "two hundred three million, two hundred thirty thousand, forty-four".

Divisors: 1 2 3 4 6 9 12 18 36 5645279 11290558 16935837 22581116 33871674 50807511 67743348 101615022 203230044