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9728053 = 73133261
BaseRepresentation
bin100101000111…
…000000110101
3200022020101021
4211013000311
54442244203
6544301141
7145454446
oct45070065
920266337
109728053
115544915
1233117b1
132027b5a
1414132cd
15cc25bd
hex947035

9728053 has 4 divisors (see below), whose sum is σ = 9861388. Its totient is φ = 9594720.

The previous prime is 9728051. The next prime is 9728071. The reversal of 9728053 is 3508279.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8421604 + 1306449 = 2902^2 + 1143^2 .

It is a cyclic number.

It is not a de Polignac number, because 9728053 - 21 = 9728051 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9728051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66558 + ... + 66703.

It is an arithmetic number, because the mean of its divisors is an integer number (2465347).

Almost surely, 29728053 is an apocalyptic number.

It is an amenable number.

9728053 is a deficient number, since it is larger than the sum of its proper divisors (133335).

9728053 is a wasteful number, since it uses less digits than its factorization.

9728053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133334.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 9728053 is about 3118.9826867105. The cubic root of 9728053 is about 213.4725195760.

It can be divided in two parts, 972 and 8053, that added together give a square (9025 = 952).

The spelling of 9728053 in words is "nine million, seven hundred twenty-eight thousand, fifty-three".

Divisors: 1 73 133261 9728053