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204040434 = 23132615903
BaseRepresentation
bin11000010100101…
…10100011110010
3112012221022212010
430022112203302
5404213243214
632125143350
75025213033
oct1412264362
9465838763
10204040434
11a51a2664
12583bab56
13333703b0
141d154a8a
1512da6659
hexc2968f2

204040434 has 16 divisors (see below), whose sum is σ = 439471872. Its totient is φ = 62781648.

The previous prime is 204040427. The next prime is 204040457. The reversal of 204040434 is 434040402.

It is a self number, because there is not a number n which added to its sum of digits gives 204040434.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1307874 + ... + 1308029.

It is an arithmetic number, because the mean of its divisors is an integer number (27466992).

Almost surely, 2204040434 is an apocalyptic number.

204040434 is an abundant number, since it is smaller than the sum of its proper divisors (235431438).

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

204040434 is a wasteful number, since it uses less digits than its factorization.

204040434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2615921.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 204040434 is about 14284.2722600768. The cubic root of 204040434 is about 588.7154221695.

Adding to 204040434 its reverse (434040402), we get a palindrome (638080836).

The spelling of 204040434 in words is "two hundred four million, forty thousand, four hundred thirty-four".

Divisors: 1 2 3 6 13 26 39 78 2615903 5231806 7847709 15695418 34006739 68013478 102020217 204040434