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38232220 = 22513147047
BaseRepresentation
bin1001000111011…
…0000010011100
32122221101202011
42101312002130
534241412340
63443241004
7642653125
oct221660234
978841664
1038232220
111a643484
1210979164
137bc8020
14511304c
1535530ea
hex247609c

38232220 has 24 divisors (see below), whose sum is σ = 86464224. Its totient is φ = 14116416.

The previous prime is 38232191. The next prime is 38232223. The reversal of 38232220 is 2223283.

It is a super-2 number, since 2×382322202 = 2923405292256800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 38232191 and 38232200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38232223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73264 + ... + 73783.

It is an arithmetic number, because the mean of its divisors is an integer number (3602676).

Almost surely, 238232220 is an apocalyptic number.

It is an amenable number.

38232220 is an abundant number, since it is smaller than the sum of its proper divisors (48232004).

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

38232220 is a wasteful number, since it uses less digits than its factorization.

38232220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147069 (or 147067 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 38232220 is about 6183.2208435410. The cubic root of 38232220 is about 336.8809906537.

The spelling of 38232220 in words is "thirty-eight million, two hundred thirty-two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 147047 294094 588188 735235 1470470 1911611 2940940 3823222 7646444 9558055 19116110 38232220