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268141990 = 2526814199
BaseRepresentation
bin11111111101110…
…00010110100110
3200200120000122211
433332320112212
51022121020430
642335114034
76434112034
oct1776702646
9620500584
10268141990
111283a5056
127597291a
13437251cc
142787d554
151881972a
hexffb85a6

268141990 has 8 divisors (see below), whose sum is σ = 482655600. Its totient is φ = 107256792.

The previous prime is 268141967. The next prime is 268142011. The reversal of 268141990 is 99141862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13407090 + ... + 13407109.

It is an arithmetic number, because the mean of its divisors is an integer number (60331950).

Almost surely, 2268141990 is an apocalyptic number.

268141990 is a deficient number, since it is larger than the sum of its proper divisors (214513610).

268141990 is a wasteful number, since it uses less digits than its factorization.

268141990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26814206.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 268141990 is about 16375.0416793363. The cubic root of 268141990 is about 644.8444149300.

The spelling of 268141990 in words is "two hundred sixty-eight million, one hundred forty-one thousand, nine hundred ninety".

Divisors: 1 2 5 10 26814199 53628398 134070995 268141990