Search a number
-
+
38807748 = 2234771241
BaseRepresentation
bin1001010000001…
…0100011000100
32201000122020000
42110002203010
534413321443
63503441300
7650601060
oct224024304
981018200
1038807748
111a9a6921
1210bb6230
138069c85
145222aa0
1536188d3
hex25028c4

38807748 has 120 divisors (see below), whose sum is σ = 118065024. Its totient is φ = 10886400.

The previous prime is 38807711. The next prime is 38807767. The reversal of 38807748 is 84770883.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 160908 + ... + 161148.

Almost surely, 238807748 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 38807748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59032512).

38807748 is an abundant number, since it is smaller than the sum of its proper divisors (79257276).

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

38807748 is a wasteful number, since it uses less digits than its factorization.

38807748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335 (or 324 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 38807748 is about 6229.5865031316. The cubic root of 38807748 is about 338.5629892373.

It can be divided in two parts, 3880 and 7748, that added together give a triangular number (11628 = T152).

The spelling of 38807748 in words is "thirty-eight million, eight hundred seven thousand, seven hundred forty-eight".

Divisors: 1 2 3 4 6 7 9 12 14 18 21 27 28 36 42 54 63 71 81 84 108 126 142 162 189 213 241 252 284 324 378 426 482 497 567 639 723 756 852 964 994 1134 1278 1446 1491 1687 1917 1988 2169 2268 2556 2892 2982 3374 3834 4338 4473 5061 5751 5964 6507 6748 7668 8676 8946 10122 11502 13014 13419 15183 17111 17892 19521 20244 23004 26028 26838 30366 34222 39042 40257 45549 51333 53676 60732 68444 78084 80514 91098 102666 119777 136647 153999 161028 182196 205332 239554 273294 307998 359331 461997 479108 546588 615996 718662 923994 1077993 1385991 1437324 1847988 2155986 2771982 3233979 4311972 5543964 6467958 9701937 12935916 19403874 38807748