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235230440 = 23539714813
BaseRepresentation
bin11100000010101…
…01010011101000
3121101121221111112
432001111103220
5440204333230
635201445452
75554266014
oct1601252350
9541557445
10235230440
11110866125
1266940888
1339970c13
1423353544
15159b7d95
hexe0554e8

235230440 has 32 divisors (see below), whose sum is σ = 530637480. Its totient is φ = 93848832.

The previous prime is 235230433. The next prime is 235230487. The reversal of 235230440 is 44032532.

It can be written as a sum of positive squares in 4 ways, for example, as 184905604 + 50324836 = 13598^2 + 7094^2 .

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, 8474 + ... + 23286.

Almost surely, 2235230440 is an apocalyptic number.

235230440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

235230440 is an abundant number, since it is smaller than the sum of its proper divisors (295407040).

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

235230440 is a wasteful number, since it uses less digits than its factorization.

235230440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15221 (or 15217 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 235230440 is about 15337.2239991467. The cubic root of 235230440 is about 617.3022221160.

Adding to 235230440 its reverse (44032532), we get a palindrome (279262972).

The spelling of 235230440 in words is "two hundred thirty-five million, two hundred thirty thousand, four hundred forty".

Divisors: 1 2 4 5 8 10 20 40 397 794 1588 1985 3176 3970 7940 14813 15880 29626 59252 74065 118504 148130 296260 592520 5880761 11761522 23523044 29403805 47046088 58807610 117615220 235230440