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380525885 = 5149510773
BaseRepresentation
bin10110101011100…
…101110100111101
3222112000201101022
4112223211310331
51234403312020
6101431553525
712300262625
oct2653456475
9875021338
10380525885
11185884803
12a752b8a5
1360ab365c
1438775885
1523618625
hex16ae5d3d

380525885 has 8 divisors (see below), whose sum is σ = 459696600. Its totient is φ = 302377024.

The previous prime is 380525861. The next prime is 380525891. The reversal of 380525885 is 588525083.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 27762361 + 352763524 = 5269^2 + 18782^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2k-380525885 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254642 + ... + 256131.

It is an arithmetic number, because the mean of its divisors is an integer number (57462075).

Almost surely, 2380525885 is an apocalyptic number.

It is an amenable number.

380525885 is a deficient number, since it is larger than the sum of its proper divisors (79170715).

380525885 is a wasteful number, since it uses less digits than its factorization.

380525885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510927.

The product of its (nonzero) digits is 384000, while the sum is 44.

The square root of 380525885 is about 19507.0726917188. The cubic root of 380525885 is about 724.6496190409.

The spelling of 380525885 in words is "three hundred eighty million, five hundred twenty-five thousand, eight hundred eighty-five".

Divisors: 1 5 149 745 510773 2553865 76105177 380525885