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10780393 = 131376053
BaseRepresentation
bin101001000111…
…111011101001
3202021200220211
4221013323221
510224433033
61023021121
7160426501
oct51077351
922250824
1010780393
1160a3518
12373a7a1
132305b40
141608a01
15e2e2cd
hexa47ee9

10780393 has 8 divisors (see below), whose sum is σ = 11696328. Its totient is φ = 9876864.

The previous prime is 10780387. The next prime is 10780403. The reversal of 10780393 is 39308701.

It can be written as a sum of positive squares in 4 ways, for example, as 2304 + 10778089 = 48^2 + 3283^2 .

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 10780393 - 25 = 10780361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10780333) 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, 1246 + ... + 4807.

It is an arithmetic number, because the mean of its divisors is an integer number (1462041).

Almost surely, 210780393 is an apocalyptic number.

10780393 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

10780393 is a deficient number, since it is larger than the sum of its proper divisors (915935).

10780393 is a wasteful number, since it uses less digits than its factorization.

10780393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6203.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 10780393 is about 3283.3508798178. The cubic root of 10780393 is about 220.9080444337.

The spelling of 10780393 in words is "ten million, seven hundred eighty thousand, three hundred ninety-three".

Divisors: 1 13 137 1781 6053 78689 829261 10780393