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38642 = 21392
BaseRepresentation
bin1001011011110010
31222000012
421123302
52214032
6454522
7220442
oct113362
958005
1038642
112703a
121a442
1314786
1410122
15b6b2
hex96f2

38642 has 6 divisors (see below), whose sum is σ = 58383. Its totient is φ = 19182.

The previous prime is 38639. The next prime is 38651. The reversal of 38642 is 24683.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19321 + 19321 = 139^2 + 139^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=139.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 38642.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 209 + ... + 347.

238642 is an apocalyptic number.

38642 is a deficient number, since it is larger than the sum of its proper divisors (19741).

38642 is an equidigital number, since it uses as much as digits as its factorization.

38642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280 (or 141 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 38642 is about 196.5756851699. The cubic root of 38642 is about 33.8080300238.

Multiplying 38642 by its product of digits (1152), we get a square (44515584 = 66722).

The spelling of 38642 in words is "thirty-eight thousand, six hundred forty-two".

Divisors: 1 2 139 278 19321 38642