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52022020 = 2256142641
BaseRepresentation
bin1100011001110…
…0101100000100
310121212222210111
43012130230010
5101304201040
65055002404
71201115461
oct306345404
9117788714
1052022020
1127401a06
1215509404
13aa1587b
146ca2668
154878dea
hex319cb04

52022020 has 24 divisors (see below), whose sum is σ = 111039768. Its totient is φ = 20467200.

The previous prime is 52022017. The next prime is 52022029. The reversal of 52022020 is 2022025.

It can be written as a sum of positive squares in 4 ways, for example, as 440896 + 51581124 = 664^2 + 7182^2 .

It is not an unprimeable number, because it can be changed into a prime (52022029) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 20101 + ... + 22540.

It is an arithmetic number, because the mean of its divisors is an integer number (4626657).

Almost surely, 252022020 is an apocalyptic number.

It is an amenable number.

52022020 is an abundant number, since it is smaller than the sum of its proper divisors (59017748).

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

52022020 is a wasteful number, since it uses less digits than its factorization.

52022020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42711 (or 42709 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 52022020 is about 7212.6292016157. The cubic root of 52022020 is about 373.3037940772.

Adding to 52022020 its reverse (2022025), we get a palindrome (54044045).

The spelling of 52022020 in words is "fifty-two million, twenty-two thousand, twenty".

Divisors: 1 2 4 5 10 20 61 122 244 305 610 1220 42641 85282 170564 213205 426410 852820 2601101 5202202 10404404 13005505 26011010 52022020