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534640 = 24541163
BaseRepresentation
bin10000010100001110000
31000011101111
42002201300
5114102030
615243104
74354501
oct2024160
91004344
10534640
11335757
12219494
13159472
14dcba8
15a862a
hex82870

534640 has 40 divisors (see below), whose sum is σ = 1281168. Its totient is φ = 207360.

The previous prime is 534637. The next prime is 534647. The reversal of 534640 is 46435.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a d-powerful number, because it can be written as 55 + 312 + 6 + 4 + 43 + 0 .

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (534647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3199 + ... + 3361.

2534640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 534640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (640584).

534640 is an abundant number, since it is smaller than the sum of its proper divisors (746528).

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

534640 is a wasteful number, since it uses less digits than its factorization.

534640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 534640 is about 731.1908095703. The cubic root of 534640 is about 81.1622010163.

The spelling of 534640 in words is "five hundred thirty-four thousand, six hundred forty".

Divisors: 1 2 4 5 8 10 16 20 40 41 80 82 163 164 205 326 328 410 652 656 815 820 1304 1630 1640 2608 3260 3280 6520 6683 13040 13366 26732 33415 53464 66830 106928 133660 267320 534640