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235215430 = 25891272081
BaseRepresentation
bin11100000010100…
…01101001000110
3121101121011220121
432001101221012
5440203343210
635201252154
75554204162
oct1601215106
9541534817
10235215430
1111085591a
126693405a
1339967138
142334bca2
15159b36da
hexe051a46

235215430 has 32 divisors (see below), whose sum is σ = 431723520. Its totient is φ = 92252160.

The previous prime is 235215391. The next prime is 235215467. The reversal of 235215430 is 34512532.

It is a junction number, because it is equal to n+sod(n) for n = 235215395 and 235215404.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 111990 + ... + 114070.

It is an arithmetic number, because the mean of its divisors is an integer number (13491360).

Almost surely, 2235215430 is an apocalyptic number.

235215430 is a deficient number, since it is larger than the sum of its proper divisors (196508090).

235215430 is a wasteful number, since it uses less digits than its factorization.

235215430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2304.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 235215430 is about 15336.7346589814. The cubic root of 235215430 is about 617.2890918660.

Adding to 235215430 its reverse (34512532), we get a palindrome (269727962).

The spelling of 235215430 in words is "two hundred thirty-five million, two hundred fifteen thousand, four hundred thirty".

Divisors: 1 2 5 10 89 127 178 254 445 635 890 1270 2081 4162 10405 11303 20810 22606 56515 113030 185209 264287 370418 528574 926045 1321435 1852090 2642870 23521543 47043086 117607715 235215430