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29872 = 241867
BaseRepresentation
bin111010010110000
31111222101
413102300
51423442
6350144
7153043
oct72260
944871
1029872
1120497
1215354
131079b
14ac5a
158cb7
hex74b0

29872 has 10 divisors (see below), whose sum is σ = 57908. Its totient is φ = 14928.

The previous prime is 29867. The next prime is 29873. The reversal of 29872 is 27892.

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 29872.

It is not an unprimeable number, because it can be changed into a prime (29873) by changing a digit.

29872 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 918 + ... + 949.

229872 is an apocalyptic number.

It is an amenable number.

29872 is a deficient number, since it is larger than the sum of its proper divisors (28036).

29872 is a wasteful number, since it uses less digits than its factorization.

29872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1875 (or 1869 counting only the distinct ones).

The product of its digits is 2016, while the sum is 28.

The square root of 29872 is about 172.8351816037. The cubic root of 29872 is about 31.0280703084.

The spelling of 29872 in words is "twenty-nine thousand, eight hundred seventy-two".

Divisors: 1 2 4 8 16 1867 3734 7468 14936 29872