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380289001 = 195012
BaseRepresentation
bin10110101010101…
…011111111101001
3222111120200102211
4112222223333221
51234323222001
6101422525121
712265255201
oct2652537751
9874520384
10380289001
11185732834
12a74367a1
1360a2c8a1
1438713401
15235bd351
hex16aabfe9

380289001 has 3 divisors (see below), whose sum is σ = 380308503. Its totient is φ = 380269500.

The previous prime is 380288999. The next prime is 380289029. The reversal of 380289001 is 100982083.

The square root of 380289001 is 19501.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 204461401 + 175827600 = 14299^2 + 13260^2 .

It is not a de Polignac number, because 380289001 - 21 = 380288999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (380289101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 9751 + ... + 29251.

It is an arithmetic number, because the mean of its divisors is an integer number (126769501).

Almost surely, 2380289001 is an apocalyptic number.

380289001 is the 19501-st square number.

380289001 is the 9751-st centered octagonal number.

It is an amenable number.

380289001 is a deficient number, since it is larger than the sum of its proper divisors (19502).

380289001 is an frugal number, since it uses more digits than its factorization.

380289001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39002 (or 19501 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The cubic root of 380289001 is about 724.4992188190.

The spelling of 380289001 in words is "three hundred eighty million, two hundred eighty-nine thousand, one".

Divisors: 1 19501 380289001