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38256988 = 22711223557
BaseRepresentation
bin1001000111110…
…0000101011100
32122222122201111
42101330011130
534243210423
63443551404
7643115260
oct221740534
978878644
1038256988
111a660050
121098b564
137c06393
14511c0a0
15355a60d
hex247c15c

38256988 has 48 divisors (see below), whose sum is σ = 83994624. Its totient is φ = 14811840.

The previous prime is 38256979. The next prime is 38256989. The reversal of 38256988 is 88965283.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38256989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68406 + ... + 68962.

It is an arithmetic number, because the mean of its divisors is an integer number (1749888).

Almost surely, 238256988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38256988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41997312).

38256988 is an abundant number, since it is smaller than the sum of its proper divisors (45737636).

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

38256988 is a wasteful number, since it uses less digits than its factorization.

38256988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802 (or 800 counting only the distinct ones).

The product of its digits is 829440, while the sum is 49.

The square root of 38256988 is about 6185.2233589419. The cubic root of 38256988 is about 336.9537222156.

The spelling of 38256988 in words is "thirty-eight million, two hundred fifty-six thousand, nine hundred eighty-eight".

Divisors: 1 2 4 7 11 14 22 28 44 77 154 223 308 446 557 892 1114 1561 2228 2453 3122 3899 4906 6127 6244 7798 9812 12254 15596 17171 24508 34342 42889 68684 85778 124211 171556 248422 496844 869477 1366321 1738954 2732642 3477908 5465284 9564247 19128494 38256988