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1768028885 = 57313716103
BaseRepresentation
bin110100101100001…
…1111101011010101
311120012212011200022
41221120133223111
512110103411020
6451234554525
761545666110
oct15130375325
94505764608
101768028885
118280082a7
12414138a45
132223a7b4c
1412ab53577
15a5340625
hex6961fad5

1768028885 has 16 divisors (see below), whose sum is σ = 2425648896. Its totient is φ = 1211900928.

The previous prime is 1768028879. The next prime is 1768028923. The reversal of 1768028885 is 5888208671.

It is not a de Polignac number, because 1768028885 - 220 = 1766980309 is a prime.

It is a super-2 number, since 2×17680288852 = 6251852276388686450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101744 + ... + 117846.

It is an arithmetic number, because the mean of its divisors is an integer number (151603056).

Almost surely, 21768028885 is an apocalyptic number.

It is an amenable number.

1768028885 is a deficient number, since it is larger than the sum of its proper divisors (657620011).

1768028885 is a wasteful number, since it uses less digits than its factorization.

1768028885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19252.

The product of its (nonzero) digits is 1720320, while the sum is 53.

The square root of 1768028885 is about 42047.9355616896. The cubic root of 1768028885 is about 1209.1953042753.

The spelling of 1768028885 in words is "one billion, seven hundred sixty-eight million, twenty-eight thousand, eight hundred eighty-five".

Divisors: 1 5 7 35 3137 15685 16103 21959 80515 109795 112721 563605 50515111 252575555 353605777 1768028885