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216074 = 2108037
BaseRepresentation
bin110100110000001010
3101222101202
4310300022
523403244
64344202
71556645
oct646012
9358352
10216074
11138381
12a5062
1377471
1458a5c
154404e
hex34c0a

216074 has 4 divisors (see below), whose sum is σ = 324114. Its totient is φ = 108036.

The previous prime is 216071. The next prime is 216091. The reversal of 216074 is 470612.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 208849 + 7225 = 457^2 + 85^2 .

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 216074.

It is not an unprimeable number, because it can be changed into a prime (216071) by changing a digit.

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, 54017 + ... + 54020.

216074 is a Friedman number, since it can be written as 74+60^(2+1), using all its digits and the basic arithmetic operations.

2216074 is an apocalyptic number.

216074 is a deficient number, since it is larger than the sum of its proper divisors (108040).

216074 is a wasteful number, since it uses less digits than its factorization.

216074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108039.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 216074 is about 464.8376060518. The cubic root of 216074 is about 60.0068510695.

Adding to 216074 its reverse (470612), we get a palindrome (686686).

The spelling of 216074 in words is "two hundred sixteen thousand, seventy-four".

Divisors: 1 2 108037 216074