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38020216 = 23131971271
BaseRepresentation
bin1001000100001…
…0010001111000
32122112121221011
42101002101320
534213121331
63434523304
7641111053
oct221022170
978477834
1038020216
111a509173
1210896534
137b52690
145099a9a
1535103b1
hex2442478

38020216 has 64 divisors (see below), whose sum is σ = 82252800. Its totient is φ = 16329600.

The previous prime is 38020207. The next prime is 38020223. The reversal of 38020216 is 61202083.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140161 + ... + 140431.

It is an arithmetic number, because the mean of its divisors is an integer number (1285200).

Almost surely, 238020216 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 38020216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41126400).

38020216 is an abundant number, since it is smaller than the sum of its proper divisors (44232584).

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

38020216 is a wasteful number, since it uses less digits than its factorization.

38020216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 38020216 is about 6166.0535190671. The cubic root of 38020216 is about 336.2571491411.

Adding to 38020216 its reverse (61202083), we get a palindrome (99222299).

The spelling of 38020216 in words is "thirty-eight million, twenty thousand, two hundred sixteen".

Divisors: 1 2 4 8 13 19 26 38 52 71 76 104 142 152 247 271 284 494 542 568 923 988 1084 1349 1846 1976 2168 2698 3523 3692 5149 5396 7046 7384 10298 10792 14092 17537 19241 20596 28184 35074 38482 41192 66937 70148 76964 133874 140296 153928 250133 267748 365579 500266 535496 731158 1000532 1462316 2001064 2924632 4752527 9505054 19010108 38020216