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38875 = 53311
BaseRepresentation
bin1001011111011011
31222022211
421133123
52221000
6455551
7221224
oct113733
958284
1038875
1127231
121a5b7
1314905
141024b
15b7ba
hex97db

38875 has 8 divisors (see below), whose sum is σ = 48672. Its totient is φ = 31000.

The previous prime is 38873. The next prime is 38891. The reversal of 38875 is 57883.

It is not a de Polignac number, because 38875 - 21 = 38873 is a prime.

It is a super-2 number, since 2×388752 = 3022531250, which contains 22 as substring.

It is a Duffinian number.

38875 is a lucky number.

It is a nialpdrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (38873) by changing a digit.

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, 31 + ... + 280.

It is an arithmetic number, because the mean of its divisors is an integer number (6084).

238875 is an apocalyptic number.

38875 is the 125-th heptagonal number.

38875 is a deficient number, since it is larger than the sum of its proper divisors (9797).

38875 is an equidigital number, since it uses as much as digits as its factorization.

38875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326 (or 316 counting only the distinct ones).

The product of its digits is 6720, while the sum is 31.

The square root of 38875 is about 197.1674415313. The cubic root of 38875 is about 33.8758447614.

The spelling of 38875 in words is "thirty-eight thousand, eight hundred seventy-five".

Divisors: 1 5 25 125 311 1555 7775 38875