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2028500 = 22534057
BaseRepresentation
bin111101111001111010100
310211001120122
413233033110
51004403000
6111251112
723145665
oct7571724
93731518
102028500
111166051
12819a98
135603c6
143ab36c
152a1085
hex1ef3d4

2028500 has 24 divisors (see below), whose sum is σ = 4431336. Its totient is φ = 811200.

The previous prime is 2028493. The next prime is 2028503. The reversal of 2028500 is 58202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 85264 + 1943236 = 292^2 + 1394^2 .

It is a super-2 number, since 2×20285002 = 8229624500000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2028503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1529 + ... + 2528.

It is an arithmetic number, because the mean of its divisors is an integer number (184639).

22028500 is an apocalyptic number.

2028500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2028500 is an abundant number, since it is smaller than the sum of its proper divisors (2402836).

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

2028500 is a wasteful number, since it uses less digits than its factorization.

2028500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4076 (or 4064 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 2028500 is about 1424.2541907960. The cubic root of 2028500 is about 126.5877470844.

The spelling of 2028500 in words is "two million, twenty-eight thousand, five hundred".

Divisors: 1 2 4 5 10 20 25 50 100 125 250 500 4057 8114 16228 20285 40570 81140 101425 202850 405700 507125 1014250 2028500