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38885280 = 2535771163
BaseRepresentation
bin1001010001010…
…1011110100000
32201011120120120
42110111132200
534423312110
63505240240
7651343110
oct224253640
981146516
1038885280
111aa4a0a5
1211033080
138096355
145243040
153631870
hex25157a0

38885280 has 192 divisors, whose sum is σ = 142829568. Its totient is φ = 8709120.

The previous prime is 38885279. The next prime is 38885291. The reversal of 38885280 is 8258883.

It is a Harshad number since it is a multiple of its sum of digits (42).

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 31 ways as a sum of consecutive naturals, for example, 238479 + ... + 238641.

It is an arithmetic number, because the mean of its divisors is an integer number (743904).

Almost surely, 238885280 is an apocalyptic number.

38885280 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38885280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71414784).

38885280 is an abundant number, since it is smaller than the sum of its proper divisors (103944288).

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

38885280 is a wasteful number, since it uses less digits than its factorization.

38885280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 42.

The square root of 38885280 is about 6235.8062830720. The cubic root of 38885280 is about 338.7883051050.

The spelling of 38885280 in words is "thirty-eight million, eight hundred eighty-five thousand, two hundred eighty".