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52728351 = 31323292027
BaseRepresentation
bin1100100100100…
…1001000011111
310200012212200220
43021021020133
5101444301401
65122052423
71210116654
oct311111037
9120185626
1052728351
1127844655
12157aa113
13ac02210
147007c2b
154968336
hex324921f

52728351 has 32 divisors (see below), whose sum is σ = 81768960. Its totient is φ = 29952384.

The previous prime is 52728341. The next prime is 52728371. The reversal of 52728351 is 15382725.

It is not a de Polignac number, because 52728351 - 27 = 52728223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52728311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25000 + ... + 27026.

It is an arithmetic number, because the mean of its divisors is an integer number (2555280).

Almost surely, 252728351 is an apocalyptic number.

52728351 is a deficient number, since it is larger than the sum of its proper divisors (29040609).

52728351 is a wasteful number, since it uses less digits than its factorization.

52728351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2095.

The product of its digits is 16800, while the sum is 33.

The square root of 52728351 is about 7261.4289915966. The cubic root of 52728351 is about 374.9857203451.

The spelling of 52728351 in words is "fifty-two million, seven hundred twenty-eight thousand, three hundred fifty-one".

Divisors: 1 3 13 23 29 39 69 87 299 377 667 897 1131 2001 2027 6081 8671 26013 26351 46621 58783 79053 139863 176349 606073 764179 1352009 1818219 2292537 4056027 17576117 52728351