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380786897 = 661757761
BaseRepresentation
bin10110101100100…
…101100011010001
3222112111222102102
4112230211203101
51234440140042
6101441330145
712302430611
oct2654454321
9875458372
10380786897
11185a42917
12a7636955
1360b753ba
1438802a41
152366ab32
hex16b258d1

380786897 has 8 divisors (see below), whose sum is σ = 382368552. Its totient is φ = 379209600.

The previous prime is 380786851. The next prime is 380786911. The reversal of 380786897 is 798687083.

It can be written as a sum of positive squares in 4 ways, for example, as 21911761 + 358875136 = 4681^2 + 18944^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 380786897 - 28 = 380786641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (380086897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 499997 + ... + 500757.

It is an arithmetic number, because the mean of its divisors is an integer number (47796069).

Almost surely, 2380786897 is an apocalyptic number.

It is an amenable number.

380786897 is a deficient number, since it is larger than the sum of its proper divisors (1581655).

380786897 is an equidigital number, since it uses as much as digits as its factorization.

380786897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2179.

The product of its (nonzero) digits is 4064256, while the sum is 56.

The square root of 380786897 is about 19513.7617337099. The cubic root of 380786897 is about 724.8152661314.

The spelling of 380786897 in words is "three hundred eighty million, seven hundred eighty-six thousand, eight hundred ninety-seven".

Divisors: 1 661 757 761 500377 503021 576077 380786897