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26012020 = 22510091289
BaseRepresentation
bin110001100111…
…0100101110100
31210221112210011
41203032211310
523124341040
62325310004
7434045536
oct143164564
953845704
1026012020
1113757241
128865304
135509a38
143651856
15243c3ea
hex18ce974

26012020 has 24 divisors (see below), whose sum is σ = 54721800. Its totient is φ = 10386432.

The previous prime is 26012003. The next prime is 26012027. The reversal of 26012020 is 2021062.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3771364 + 22240656 = 1942^2 + 4716^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26012027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19536 + ... + 20824.

It is an arithmetic number, because the mean of its divisors is an integer number (2280075).

Almost surely, 226012020 is an apocalyptic number.

26012020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26012020 is an abundant number, since it is smaller than the sum of its proper divisors (28709780).

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

26012020 is a wasteful number, since it uses less digits than its factorization.

26012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2307 (or 2305 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 26012020 is about 5100.1980353708. The cubic root of 26012020 is about 296.2952526314.

Adding to 26012020 its reverse (2021062), we get a palindrome (28033082).

The spelling of 26012020 in words is "twenty-six million, twelve thousand, twenty".

Divisors: 1 2 4 5 10 20 1009 1289 2018 2578 4036 5045 5156 6445 10090 12890 20180 25780 1300601 2601202 5202404 6503005 13006010 26012020