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223132020 = 22353718867
BaseRepresentation
bin11010100110010…
…11100101110100
3120112212021120220
431103023211310
5424110211040
634050254340
75346406446
oct1523134564
9515767526
10223132020
11104a52431
12628873b0
13372c61a7
14218c4496
15148c82d0
hexd4cb974

223132020 has 24 divisors (see below), whose sum is σ = 624769824. Its totient is φ = 59501856.

The previous prime is 223132009. The next prime is 223132027. The reversal of 223132020 is 20231322.

It is a super-3 number, since 3×2231320203 (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223132027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1859374 + ... + 1859493.

It is an arithmetic number, because the mean of its divisors is an integer number (26032076).

Almost surely, 2223132020 is an apocalyptic number.

223132020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223132020 is an abundant number, since it is smaller than the sum of its proper divisors (401637804).

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

223132020 is a wasteful number, since it uses less digits than its factorization.

223132020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3718879 (or 3718877 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 223132020 is about 14937.6042255778. The cubic root of 223132020 is about 606.5323449082.

Adding to 223132020 its reverse (20231322), we get a palindrome (243363342).

The spelling of 223132020 in words is "two hundred twenty-three million, one hundred thirty-two thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 3718867 7437734 11156601 14875468 18594335 22313202 37188670 44626404 55783005 74377340 111566010 223132020