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28852537 = 731132961
BaseRepresentation
bin110111000010…
…0000100111001
32000021212020111
41232010010321
524341240122
62510224321
7500146120
oct156040471
960255214
1028852537
111531737a
1297b50a1
135c9290c
143b90ab7
1527edd77
hex1b84139

28852537 has 8 divisors (see below), whose sum is σ = 34038272. Its totient is φ = 23932800.

The previous prime is 28852529. The next prime is 28852541. The reversal of 28852537 is 73525882.

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 28852537 - 23 = 28852529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28852537.

It is not an unprimeable number, because it can be changed into a prime (28852517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66264 + ... + 66697.

It is an arithmetic number, because the mean of its divisors is an integer number (4254784).

Almost surely, 228852537 is an apocalyptic number.

It is an amenable number.

28852537 is a deficient number, since it is larger than the sum of its proper divisors (5185735).

28852537 is a wasteful number, since it uses less digits than its factorization.

28852537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132999.

The product of its digits is 134400, while the sum is 40.

The square root of 28852537 is about 5371.4557617093. The cubic root of 28852537 is about 306.7100467671.

It can be divided in two parts, 288 and 52537, that added together give a palindrome (52825).

The spelling of 28852537 in words is "twenty-eight million, eight hundred fifty-two thousand, five hundred thirty-seven".

Divisors: 1 7 31 217 132961 930727 4121791 28852537