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213996 = 223171049
BaseRepresentation
bin110100001111101100
3101212112210
4310033230
523321441
64330420
71550616
oct641754
9355483
10213996
11136862
12a3a10
1376533
1457db6
1543616
hex343ec

213996 has 24 divisors (see below), whose sum is σ = 529200. Its totient is φ = 67072.

The previous prime is 213989. The next prime is 214003. The reversal of 213996 is 699312.

It is an interprime number because it is at equal distance from previous prime (213989) and next prime (214003).

It is a nialpdrome in base 13.

It is an unprimeable number.

213996 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321 + ... + 728.

It is an arithmetic number, because the mean of its divisors is an integer number (22050).

2213996 is an apocalyptic number.

It is an amenable number.

213996 is an abundant number, since it is smaller than the sum of its proper divisors (315204).

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

213996 is a wasteful number, since it uses less digits than its factorization.

213996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073 (or 1071 counting only the distinct ones).

The product of its digits is 2916, while the sum is 30.

The square root of 213996 is about 462.5970168516. The cubic root of 213996 is about 59.8138676205.

The spelling of 213996 in words is "two hundred thirteen thousand, nine hundred ninety-six".