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10728725 = 527101607
BaseRepresentation
bin101000111011…
…010100010101
3202012002001012
4220323110111
510221304400
61021542005
7160123040
oct50732425
922162035
1010728725
116068717
123714905
1322b8477
1415d3c57
15e1dd35
hexa3b515

10728725 has 24 divisors (see below), whose sum is σ = 15379968. Its totient is φ = 7272000.

The previous prime is 10728713. The next prime is 10728727. The reversal of 10728725 is 52782701.

10728725 = T259 + T260 + ... + T433.

10728725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10728725 - 24 = 10728709 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10728691 and 10728700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10728727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17372 + ... + 17978.

It is an arithmetic number, because the mean of its divisors is an integer number (640832).

Almost surely, 210728725 is an apocalyptic number.

It is an amenable number.

10728725 is a deficient number, since it is larger than the sum of its proper divisors (4651243).

10728725 is a wasteful number, since it uses less digits than its factorization.

10728725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725 (or 720 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 10728725 is about 3275.4732482498. The cubic root of 10728725 is about 220.5545582401.

The spelling of 10728725 in words is "ten million, seven hundred twenty-eight thousand, seven hundred twenty-five".

Divisors: 1 5 7 25 35 101 175 505 607 707 2525 3035 3535 4249 15175 17675 21245 61307 106225 306535 429149 1532675 2145745 10728725