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45020 = 2252251
BaseRepresentation
bin1010111111011100
32021202102
422333130
52420040
6544232
7245153
oct127734
967672
1045020
1130908
1222078
1317651
141259a
15d515
hexafdc

45020 has 12 divisors (see below), whose sum is σ = 94584. Its totient is φ = 18000.

The previous prime is 45013. The next prime is 45053. The reversal of 45020 is 2054.

45020 = 122 + 132 + ... + 512.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 44992 and 45010.

It is a congruent number.

It is an unprimeable number.

45020 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1106 + ... + 1145.

It is an arithmetic number, because the mean of its divisors is an integer number (7882).

245020 is an apocalyptic number.

It is an amenable number.

45020 is an abundant number, since it is smaller than the sum of its proper divisors (49564).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47292).

45020 is a wasteful number, since it uses less digits than its factorization.

45020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2260 (or 2258 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 11.

The square root of 45020 is about 212.1791695714. The cubic root of 45020 is about 35.5742017360.

Adding to 45020 its reverse (2054), we get a palindrome (47074).

The spelling of 45020 in words is "forty-five thousand, twenty".

Divisors: 1 2 4 5 10 20 2251 4502 9004 11255 22510 45020