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265040 = 2453313
BaseRepresentation
bin1000000101101010000
3111110120022
41000231100
531440130
65403012
72152466
oct1005520
9443508
10265040
11171146
12109468
1393839
146c836
15537e5
hex40b50

265040 has 20 divisors (see below), whose sum is σ = 616404. Its totient is φ = 105984.

The previous prime is 265037. The next prime is 265079. The reversal of 265040 is 40562.

265040 is nontrivially palindromic in base 13.

It can be written as a sum of positive squares in 2 ways, for example, as 179776 + 85264 = 424^2 + 292^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (17) coincides with the sum of the digits of its distinct prime factors.

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, 1577 + ... + 1736.

2265040 is an apocalyptic number.

265040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

265040 is an abundant number, since it is smaller than the sum of its proper divisors (351364).

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

265040 is a wasteful number, since it uses less digits than its factorization.

265040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3326 (or 3320 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 265040 is about 514.8203570179. The cubic root of 265040 is about 64.2348145008.

The spelling of 265040 in words is "two hundred sixty-five thousand, forty".

Divisors: 1 2 4 5 8 10 16 20 40 80 3313 6626 13252 16565 26504 33130 53008 66260 132520 265040