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2028015 = 3251117241
BaseRepresentation
bin111101111000111101111
310211000220200
413233013233
51004344030
6111244543
723144403
oct7570757
93730820
102028015
111165750
12819753
13560112
143ab103
152a0d60
hex1ef1ef

2028015 has 48 divisors (see below), whose sum is σ = 4077216. Its totient is φ = 921600.

The previous prime is 2027959. The next prime is 2028017. The reversal of 2028015 is 5108202.

2028015 is nontrivially palindromic in base 2 and base 8.

It is not a de Polignac number, because 2028015 - 26 = 2027951 is a prime.

It is a super-2 number, since 2×20280152 = 8225689680450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2028017) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8295 + ... + 8535.

It is an arithmetic number, because the mean of its divisors is an integer number (84942).

22028015 is an apocalyptic number.

2028015 is an abundant number, since it is smaller than the sum of its proper divisors (2049201).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2028015 is a wasteful number, since it uses less digits than its factorization.

2028015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 277 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 2028015 is about 1424.0839160667. The cubic root of 2028015 is about 126.5776575353.

The spelling of 2028015 in words is "two million, twenty-eight thousand, fifteen".

Divisors: 1 3 5 9 11 15 17 33 45 51 55 85 99 153 165 187 241 255 495 561 723 765 935 1205 1683 2169 2651 2805 3615 4097 7953 8415 10845 12291 13255 20485 23859 36873 39765 45067 61455 119295 135201 184365 225335 405603 676005 2028015