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211472 = 2413217
BaseRepresentation
bin110011101000010000
3101202002022
4303220100
523231342
64311012
71540352
oct635020
9352068
10211472
11134978
12a2468
1375341
14570d2
15429d2
hex33a10

211472 has 10 divisors (see below), whose sum is σ = 409758. Its totient is φ = 105728.

The previous prime is 211469. The next prime is 211493. The reversal of 211472 is 274112.

It can be written as a sum of positive squares in only one way, i.e., 173056 + 38416 = 416^2 + 196^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 211472.

It is an unprimeable 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, 6593 + ... + 6624.

2211472 is an apocalyptic number.

It is an amenable number.

211472 is a deficient number, since it is larger than the sum of its proper divisors (198286).

211472 is a wasteful number, since it uses less digits than its factorization.

211472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13225 (or 13219 counting only the distinct ones).

The product of its digits is 112, while the sum is 17.

The square root of 211472 is about 459.8608485183. The cubic root of 211472 is about 59.5777764989.

Adding to 211472 its reverse (274112), we get a palindrome (485584).

The spelling of 211472 in words is "two hundred eleven thousand, four hundred seventy-two", and thus it is an iban number.

Divisors: 1 2 4 8 16 13217 26434 52868 105736 211472