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28038935 = 57376819
BaseRepresentation
bin110101011110…
…1011100010111
31221202112012002
41222331130113
524134221220
62440545515
7460220111
oct152753427
957675162
1028038935
1114911081
12948229b
135a694b2
143a1c3b1
1526dcc75
hex1abd717

28038935 has 8 divisors (see below), whose sum is σ = 34108080. Its totient is φ = 22123584.

The previous prime is 28038929. The next prime is 28038937. The reversal of 28038935 is 53983082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-28038935 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28038937) 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, 38045 + ... + 38774.

It is an arithmetic number, because the mean of its divisors is an integer number (4263510).

Almost surely, 228038935 is an apocalyptic number.

28038935 is a deficient number, since it is larger than the sum of its proper divisors (6069145).

28038935 is an equidigital number, since it uses as much as digits as its factorization.

28038935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76897.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 28038935 is about 5295.1803557575. The cubic root of 28038935 is about 303.7995815127.

The spelling of 28038935 in words is "twenty-eight million, thirty-eight thousand, nine hundred thirty-five".

Divisors: 1 5 73 365 76819 384095 5607787 28038935