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530681880 = 233521120959
BaseRepresentation
bin11111101000011…
…001000000011000
31100222120102200110
4133220121000120
52041323310010
6124354204320
716102502331
oct3750310030
91328512613
10530681880
11252613173
121298836a0
1385c38561
14506a1288
15318c9120
hex1fa19018

530681880 has 64 divisors (see below), whose sum is σ = 1599667200. Its totient is φ = 140837760.

The previous prime is 530681807. The next prime is 530681881. The reversal of 530681880 is 88186035.

It is a happy number.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530681881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14841 + ... + 35799.

It is an arithmetic number, because the mean of its divisors is an integer number (24994800).

Almost surely, 2530681880 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 530681880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (799833600).

530681880 is an abundant number, since it is smaller than the sum of its proper divisors (1068985320).

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

530681880 is a wasteful number, since it uses less digits than its factorization.

530681880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21184 (or 21180 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 530681880 is about 23036.5335934033. The cubic root of 530681880 is about 809.6141433043.

The spelling of 530681880 in words is "five hundred thirty million, six hundred eighty-one thousand, eight hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 211 422 633 844 1055 1266 1688 2110 2532 3165 4220 5064 6330 8440 12660 20959 25320 41918 62877 83836 104795 125754 167672 209590 251508 314385 419180 503016 628770 838360 1257540 2515080 4422349 8844698 13267047 17689396 22111745 26534094 35378792 44223490 53068188 66335235 88446980 106136376 132670470 176893960 265340940 530681880