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269490 = 23513691
BaseRepresentation
bin1000001110010110010
3111200200010
41001302302
532110430
65435350
72201454
oct1016262
9450603
10269490
11174521
1210bb56
1395880
14702d4
1554cb0
hex41cb2

269490 has 32 divisors (see below), whose sum is σ = 697536. Its totient is φ = 66240.

The previous prime is 269473. The next prime is 269513. The reversal of 269490 is 94962.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

269490 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45 + ... + 735.

It is an arithmetic number, because the mean of its divisors is an integer number (21798).

2269490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 269490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348768).

269490 is an abundant number, since it is smaller than the sum of its proper divisors (428046).

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

269490 is a wasteful number, since it uses less digits than its factorization.

269490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 269490 is about 519.1242625807. The cubic root of 269490 is about 64.5923201739.

The spelling of 269490 in words is "two hundred sixty-nine thousand, four hundred ninety".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 65 78 130 195 390 691 1382 2073 3455 4146 6910 8983 10365 17966 20730 26949 44915 53898 89830 134745 269490