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531012208 = 2439298447
BaseRepresentation
bin11111101001101…
…001101001110000
31101000012012210211
4133221221221300
52041414342313
6124405233504
716105346356
oct3751515160
91330165724
10531012208
11252819371
12129a02894
1386022a0c
14507497d6
1531941e3d
hex1fa69a70

531012208 has 20 divisors (see below), whose sum is σ = 1029219840. Its totient is φ = 265407104.

The previous prime is 531012193. The next prime is 531012233. The reversal of 531012208 is 802210135.

It is a super-3 number, since 3×5310122083 (a number of 27 digits) contains 333 as substring.

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, 58641 + ... + 67087.

It is an arithmetic number, because the mean of its divisors is an integer number (51460992).

Almost surely, 2531012208 is an apocalyptic number.

It is an amenable number.

531012208 is a deficient number, since it is larger than the sum of its proper divisors (498207632).

531012208 is a wasteful number, since it uses less digits than its factorization.

531012208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12384 (or 12378 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 531012208 is about 23043.7021331209. The cubic root of 531012208 is about 809.7820924783.

The spelling of 531012208 in words is "five hundred thirty-one million, twelve thousand, two hundred eight".

Divisors: 1 2 4 8 16 3929 7858 8447 15716 16894 31432 33788 62864 67576 135152 33188263 66376526 132753052 265506104 531012208