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212630 = 25111933
BaseRepresentation
bin110011111010010110
3101210200012
4303322112
523301010
64320222
71543625
oct637226
9353605
10212630
11135830
12a3072
1375a22
14576bc
1543005
hex33e96

212630 has 16 divisors (see below), whose sum is σ = 417744. Its totient is φ = 77280.

The previous prime is 212627. The next prime is 212633. The reversal of 212630 is 36212.

It is an interprime number because it is at equal distance from previous prime (212627) and next prime (212633).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 857 + ... + 1076.

It is an arithmetic number, because the mean of its divisors is an integer number (26109).

2212630 is an apocalyptic number.

212630 is a deficient number, since it is larger than the sum of its proper divisors (205114).

212630 is a wasteful number, since it uses less digits than its factorization.

212630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1951.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 212630 is about 461.1182061034. The cubic root of 212630 is about 59.6863259640.

Adding to 212630 its reverse (36212), we get a palindrome (248842).

The spelling of 212630 in words is "two hundred twelve thousand, six hundred thirty".

Divisors: 1 2 5 10 11 22 55 110 1933 3866 9665 19330 21263 42526 106315 212630