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2028843 = 32225427
BaseRepresentation
bin111101111010100101011
310211002001100
413233110223
51004410333
6111252443
723146665
oct7572453
93732040
102028843
111166333
1281a123
135605cb
143ab535
152a1213
hex1ef52b

2028843 has 6 divisors (see below), whose sum is σ = 2930564. Its totient is φ = 1352556.

The previous prime is 2028841. The next prime is 2028847. The reversal of 2028843 is 3488202.

It is not a de Polignac number, because 2028843 - 21 = 2028841 is a prime.

It is an Ulam number.

It is a Duffinian number.

2028843 is a lucky number.

It is a zygodrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (2028841) 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, 112705 + ... + 112722.

22028843 is an apocalyptic number.

2028843 is a deficient number, since it is larger than the sum of its proper divisors (901721).

2028843 is a wasteful number, since it uses less digits than its factorization.

2028843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225433 (or 225430 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 2028843 is about 1424.3745996050. The cubic root of 2028843 is about 126.5948816091.

It can be divided in two parts, 202 and 8843, that added together give a triangular number (9045 = T134).

The spelling of 2028843 in words is "two million, twenty-eight thousand, eight hundred forty-three".

Divisors: 1 3 9 225427 676281 2028843