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130023108 = 223212728439
BaseRepresentation
bin1111011111111…
…11111011000100
3100001122212011200
413233333323010
5231241214413
620522502500
73136115055
oct757777304
9301585150
10130023108
1167438316
1237664a30
1320c26167
14133a872c
15b635573
hex7bffec4

130023108 has 36 divisors (see below), whose sum is σ = 331269120. Its totient is φ = 42998256.

The previous prime is 130023107. The next prime is 130023119. The reversal of 130023108 is 801320031.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1300231082 = 33812017227959328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (130023107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9648 + ... + 18791.

It is an arithmetic number, because the mean of its divisors is an integer number (9201920).

Almost surely, 2130023108 is an apocalyptic number.

130023108 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

130023108 is an abundant number, since it is smaller than the sum of its proper divisors (201246012).

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

130023108 is a wasteful number, since it uses less digits than its factorization.

130023108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28576 (or 28571 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 130023108 is about 11402.7675587990. The cubic root of 130023108 is about 506.6097156286.

Adding to 130023108 its reverse (801320031), we get a palindrome (931343139).

It can be divided in two parts, 13002 and 3108, that added together give a triangular number (16110 = T179).

The spelling of 130023108 in words is "one hundred thirty million, twenty-three thousand, one hundred eight".

Divisors: 1 2 3 4 6 9 12 18 36 127 254 381 508 762 1143 1524 2286 4572 28439 56878 85317 113756 170634 255951 341268 511902 1023804 3611753 7223506 10835259 14447012 21670518 32505777 43341036 65011554 130023108