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147985 = 5171741
BaseRepresentation
bin100100001000010001
321111222221
4210020101
514213420
63101041
71154305
oct441021
9244887
10147985
11a1202
1271781
1352486
143bd05
152dcaa
hex24211

147985 has 8 divisors (see below), whose sum is σ = 188136. Its totient is φ = 111360.

The previous prime is 147977. The next prime is 147997. The reversal of 147985 is 589741.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1296 + 146689 = 36^2 + 383^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 147985 - 23 = 147977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 147985.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 786 + ... + 955.

It is an arithmetic number, because the mean of its divisors is an integer number (23517).

2147985 is an apocalyptic number.

It is an amenable number.

147985 is a deficient number, since it is larger than the sum of its proper divisors (40151).

147985 is a wasteful number, since it uses less digits than its factorization.

147985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1763.

The product of its digits is 10080, while the sum is 34.

The square root of 147985 is about 384.6881854177. The cubic root of 147985 is about 52.8939376488.

The spelling of 147985 in words is "one hundred forty-seven thousand, nine hundred eighty-five".

Divisors: 1 5 17 85 1741 8705 29597 147985