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38578380 = 2235642973
BaseRepresentation
bin1001001100101…
…0100011001100
32200120222120220
42103022203030
534334002010
63454511340
7645624261
oct223124314
980528526
1038578380
111a85a565
1210b05550
137cb9759
1451a3268
1535c0970
hex24ca8cc

38578380 has 24 divisors (see below), whose sum is σ = 108019632. Its totient is φ = 10287552.

The previous prime is 38578373. The next prime is 38578427. The reversal of 38578380 is 8387583.

It is an unprimeable number.

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, 321427 + ... + 321546.

It is an arithmetic number, because the mean of its divisors is an integer number (4500818).

Almost surely, 238578380 is an apocalyptic number.

38578380 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38578380 is an abundant number, since it is smaller than the sum of its proper divisors (69441252).

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

38578380 is a wasteful number, since it uses less digits than its factorization.

38578380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642985 (or 642983 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 38578380 is about 6211.1496520371. The cubic root of 38578380 is about 337.8946604034.

The spelling of 38578380 in words is "thirty-eight million, five hundred seventy-eight thousand, three hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 642973 1285946 1928919 2571892 3214865 3857838 6429730 7715676 9644595 12859460 19289190 38578380