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130212020 = 22524232687
BaseRepresentation
bin1111100001011…
…10000010110100
3100002000110022102
413300232002310
5231313241040
620530521232
73140532611
oct760560264
9302013272
10130212020
1167557244
1237736218
1320c91143
1413417508
15b671515
hex7c2e0b4

130212020 has 24 divisors (see below), whose sum is σ = 273659904. Its totient is φ = 52043936.

The previous prime is 130212013. The next prime is 130212067. The reversal of 130212020 is 20212031.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 130211992 and 130212010.

It is a congruent number.

It is an unprimeable number.

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, 47117 + ... + 49803.

It is an arithmetic number, because the mean of its divisors is an integer number (11402496).

Almost surely, 2130212020 is an apocalyptic number.

130212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130212020 is an abundant number, since it is smaller than the sum of its proper divisors (143447884).

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

130212020 is a wasteful number, since it uses less digits than its factorization.

130212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5119 (or 5117 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 130212020 is about 11411.0481551871. The cubic root of 130212020 is about 506.8549498369.

Adding to 130212020 its sum of digits (11), we get a palindrome (130212031).

Adding to 130212020 its reverse (20212031), we get a palindrome (150424051).

The spelling of 130212020 in words is "one hundred thirty million, two hundred twelve thousand, twenty".

Divisors: 1 2 4 5 10 20 2423 2687 4846 5374 9692 10748 12115 13435 24230 26870 48460 53740 6510601 13021202 26042404 32553005 65106010 130212020