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531868480 = 265111359197
BaseRepresentation
bin11111101100111…
…010101101000000
31101001210201101121
4133230322231000
52042124242410
6124435442024
716115543653
oct3754725500
91331721347
10531868480
11253253730
1212a156314
13862626a0
14508cd89a
1531a609da
hex1fb3ab40

531868480 has 224 divisors, whose sum is σ = 1520830080. Its totient is φ = 174612480.

The previous prime is 531868471. The next prime is 531868481. The reversal of 531868480 is 84868135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531868481) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2699742 + ... + 2699938.

It is an arithmetic number, because the mean of its divisors is an integer number (6789420).

Almost surely, 2531868480 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 531868480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (760415040).

531868480 is an abundant number, since it is smaller than the sum of its proper divisors (988961600).

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

531868480 is a wasteful number, since it uses less digits than its factorization.

531868480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 43.

The square root of 531868480 is about 23062.2739555318. The cubic root of 531868480 is about 810.2171241338.

The spelling of 531868480 in words is "five hundred thirty-one million, eight hundred sixty-eight thousand, four hundred eighty".