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2028225 = 35227043
BaseRepresentation
bin111101111001011000001
310211001012110
413233023001
51004400400
6111245533
723145123
oct7571301
93731173
102028225
111165921
128198a9
13560244
143ab213
152a0e50
hex1ef2c1

2028225 has 12 divisors (see below), whose sum is σ = 3353456. Its totient is φ = 1081680.

The previous prime is 2028223. The next prime is 2028227. The reversal of 2028225 is 5228202.

It is an interprime number because it is at equal distance from previous prime (2028223) and next prime (2028227).

It is not a de Polignac number, because 2028225 - 21 = 2028223 is a prime.

It is a super-2 number, since 2×20282252 = 8227393301250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2028223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13447 + ... + 13596.

22028225 is an apocalyptic number.

2028225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2028225 is a deficient number, since it is larger than the sum of its proper divisors (1325231).

2028225 is a wasteful number, since it uses less digits than its factorization.

2028225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27056 (or 27051 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 2028225 is about 1424.1576457682. The cubic root of 2028225 is about 126.5820264035.

The spelling of 2028225 in words is "two million, twenty-eight thousand, two hundred twenty-five".

Divisors: 1 3 5 15 25 75 27043 81129 135215 405645 676075 2028225