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2028141 = 32225349
BaseRepresentation
bin111101111001001101101
310211001002100
413233021231
51004400031
6111245313
723144643
oct7571155
93731070
102028141
111165855
12819839
135601ab
143ab193
152a0de6
hex1ef26d

2028141 has 6 divisors (see below), whose sum is σ = 2929550. Its totient is φ = 1352088.

The previous prime is 2028139. The next prime is 2028179. The reversal of 2028141 is 1418202.

It can be written as a sum of positive squares in only one way, i.e., 1572516 + 455625 = 1254^2 + 675^2 .

It is not a de Polignac number, because 2028141 - 21 = 2028139 is a prime.

It is a super-2 number, since 2×20281412 = 8226711831762, which contains 22 as substring.

It is a Duffinian number.

2028141 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2028101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 112666 + ... + 112683.

22028141 is an apocalyptic number.

It is an amenable number.

2028141 is a deficient number, since it is larger than the sum of its proper divisors (901409).

2028141 is a wasteful number, since it uses less digits than its factorization.

2028141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225355 (or 225352 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 2028141 is about 1424.1281543457. The cubic root of 2028141 is about 126.5802788924.

The spelling of 2028141 in words is "two million, twenty-eight thousand, one hundred forty-one".

Divisors: 1 3 9 225349 676047 2028141