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1520542872 = 233247449333
BaseRepresentation
bin101101010100001…
…1010010010011000
310220222011120200200
41122220122102120
511103224332442
6410514302200
752452254412
oct13250322230
93828146620
101520542872
11710341402
12365287960
131b3035814
14105d2d9b2
158d75634c
hex5aa1a498

1520542872 has 48 divisors (see below), whose sum is σ = 4205766240. Its totient is φ = 496062528.

The previous prime is 1520542853. The next prime is 1520542873. The reversal of 1520542872 is 2782450251.

It is a happy number.

1520542872 is a `hidden beast` number, since 1 + 520 + 54 + 2 + 87 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520542873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 221283 + ... + 228050.

It is an arithmetic number, because the mean of its divisors is an integer number (87620130).

Almost surely, 21520542872 is an apocalyptic number.

1520542872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1520542872 is an abundant number, since it is smaller than the sum of its proper divisors (2685223368).

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

1520542872 is a wasteful number, since it uses less digits than its factorization.

1520542872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449392 (or 449385 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The square root of 1520542872 is about 38994.1389442054. The cubic root of 1520542872 is about 1149.9162817443.

The spelling of 1520542872 in words is "one billion, five hundred twenty million, five hundred forty-two thousand, eight hundred seventy-two".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 47 72 94 141 188 282 376 423 564 846 1128 1692 3384 449333 898666 1347999 1797332 2695998 3594664 4043997 5391996 8087994 10783992 16175988 21118651 32351976 42237302 63355953 84474604 126711906 168949208 190067859 253423812 380135718 506847624 760271436 1520542872