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BaseRepresentation
bin1111100011000…
…01110011010100
3100002102020010021
413301201303110
5231342032040
620535234524
73142404646
oct761416324
9302366107
10130424020
1167691551
1237818a44
132103679c
1413470896
15b6b424a
hex7c61cd4

130424020 has 24 divisors (see below), whose sum is σ = 283336200. Its totient is φ = 50370432.

The previous prime is 130423981. The next prime is 130424057. The reversal of 130424020 is 20424031.

It can be written as a sum of positive squares in 4 ways, for example, as 40780996 + 89643024 = 6386^2 + 9468^2 .

It is a junction number, because it is equal to n+sod(n) for n = 130423985 and 130424003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111855 + ... + 113014.

It is an arithmetic number, because the mean of its divisors is an integer number (11805675).

Almost surely, 2130424020 is an apocalyptic number.

130424020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130424020 is an abundant number, since it is smaller than the sum of its proper divisors (152912180).

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

130424020 is a wasteful number, since it uses less digits than its factorization.

130424020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224907 (or 224905 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 130424020 is about 11420.3336203458. Note that the first 3 decimals coincide. The cubic root of 130424020 is about 507.1298732188.

Adding to 130424020 its reverse (20424031), we get a palindrome (150848051).

The spelling of 130424020 in words is "one hundred thirty million, four hundred twenty-four thousand, twenty".