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130620024 = 23321814167
BaseRepresentation
bin1111100100100…
…01101001111000
3100002210011222200
413302101221320
5231414320044
620543350200
73144152253
oct762215170
9302704880
10130620024
1167805837
12378b2360
13210a4a72
14134c209a
15b702369
hex7c91a78

130620024 has 24 divisors (see below), whose sum is σ = 353762760. Its totient is φ = 43539984.

The previous prime is 130620023. The next prime is 130620043. The reversal of 130620024 is 420026031.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

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

It is a junction number, because it is equal to n+sod(n) for n = 130619979 and 130620006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130620023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 907012 + ... + 907155.

It is an arithmetic number, because the mean of its divisors is an integer number (14740115).

Almost surely, 2130620024 is an apocalyptic number.

It is an amenable number.

130620024 is an abundant number, since it is smaller than the sum of its proper divisors (223142736).

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

130620024 is a wasteful number, since it uses less digits than its factorization.

130620024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1814179 (or 1814172 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 130620024 is about 11428.9117592184. The cubic root of 130620024 is about 507.3837879296.

Adding to 130620024 its reverse (420026031), we get a palindrome (550646055).

The spelling of 130620024 in words is "one hundred thirty million, six hundred twenty thousand, twenty-four".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 1814167 3628334 5442501 7256668 10885002 14513336 16327503 21770004 32655006 43540008 65310012 130620024