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211420334 = 21920832671
BaseRepresentation
bin11001001101000…
…00010010101110
3112201211021011202
430212200102232
5413110422314
632551245502
75145020546
oct1446402256
9481737152
10211420334
11a9383254
125a979892
1334a554b8
1420116326
15138630de
hexc9a04ae

211420334 has 16 divisors (see below), whose sum is σ = 334106880. Its totient is φ = 100060920.

The previous prime is 211420289. The next prime is 211420343. The reversal of 211420334 is 433024112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77819 + ... + 80489.

It is an arithmetic number, because the mean of its divisors is an integer number (20881680).

Almost surely, 2211420334 is an apocalyptic number.

211420334 is a deficient number, since it is larger than the sum of its proper divisors (122686546).

211420334 is a wasteful number, since it uses less digits than its factorization.

211420334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4775.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 211420334 is about 14540.3003407770. The cubic root of 211420334 is about 595.7292416834.

Adding to 211420334 its reverse (433024112), we get a palindrome (644444446).

The spelling of 211420334 in words is "two hundred eleven million, four hundred twenty thousand, three hundred thirty-four".

Divisors: 1 2 19 38 2083 2671 4166 5342 39577 50749 79154 101498 5563693 11127386 105710167 211420334