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268438460 = 22519706417
BaseRepresentation
bin10000000000000…
…000101110111100
3200201010002100012
4100000000232330
51022210012320
642345322352
76436455263
oct2000005674
9621102305
10268438460
11128587874
1275a963b8
13437ca134
14279195da
15188774c5
hex10000bbc

268438460 has 24 divisors (see below), whose sum is σ = 593391120. Its totient is φ = 101723904.

The previous prime is 268438459. The next prime is 268438493. The reversal of 268438460 is 64834862.

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, 352829 + ... + 353588.

It is an arithmetic number, because the mean of its divisors is an integer number (24724630).

Almost surely, 2268438460 is an apocalyptic number.

268438460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

268438460 is an abundant number, since it is smaller than the sum of its proper divisors (324952660).

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

268438460 is a wasteful number, since it uses less digits than its factorization.

268438460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706445 (or 706443 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 41.

The square root of 268438460 is about 16384.0916745482. The cubic root of 268438460 is about 645.0819838500.

The spelling of 268438460 in words is "two hundred sixty-eight million, four hundred thirty-eight thousand, four hundred sixty".

Divisors: 1 2 4 5 10 19 20 38 76 95 190 380 706417 1412834 2825668 3532085 7064170 13421923 14128340 26843846 53687692 67109615 134219230 268438460