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42528311 = 723318521
BaseRepresentation
bin1010001000111…
…0111000110111
32222000122212122
42202032320313
541341401221
64115310155
71024325150
oct242167067
988018778
1042528311
1122008171
12122ab35b
138a705a7
145910927
153b00eab
hex288ee37

42528311 has 16 divisors (see below), whose sum is σ = 52359168. Its totient is φ = 33739200.

The previous prime is 42528293. The next prime is 42528319. The reversal of 42528311 is 11382524.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-42528311 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 (42528319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 731 + ... + 9251.

It is an arithmetic number, because the mean of its divisors is an integer number (3272448).

Almost surely, 242528311 is an apocalyptic number.

42528311 is a deficient number, since it is larger than the sum of its proper divisors (9830857).

42528311 is a wasteful number, since it uses less digits than its factorization.

42528311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8582.

The product of its digits is 1920, while the sum is 26.

The square root of 42528311 is about 6521.3733982958. The cubic root of 42528311 is about 349.0540743737.

The spelling of 42528311 in words is "forty-two million, five hundred twenty-eight thousand, three hundred eleven".

Divisors: 1 7 23 31 161 217 713 4991 8521 59647 195983 264151 1371881 1849057 6075473 42528311