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626423130 = 232521132987
BaseRepresentation
bin100101010101100…
…111010101011010
31121122201120222200
4211111213111122
52240331020010
6142054231030
721344336334
oct4525472532
91548646880
10626423130
112a1665a73
12155955476
139ca1a798
145d2a4454
1539edbcc0
hex2556755a

626423130 has 48 divisors (see below), whose sum is σ = 1636468704. Its totient is φ = 166249440.

The previous prime is 626423129. The next prime is 626423137. The reversal of 626423130 is 31324626.

626423130 is a `hidden beast` number, since 6 + 2 + 642 + 3 + 13 + 0 = 666.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 626423094 and 626423103.

It is not an unprimeable number, because it can be changed into a prime (626423137) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2497 + ... + 35483.

It is an arithmetic number, because the mean of its divisors is an integer number (34093098).

Almost surely, 2626423130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 626423130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (818234352).

626423130 is an abundant number, since it is smaller than the sum of its proper divisors (1010045574).

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

626423130 is a wasteful number, since it uses less digits than its factorization.

626423130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33211 (or 33208 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 626423130 is about 25028.4464160283. The cubic root of 626423130 is about 855.6364195664.

Adding to 626423130 its reverse (31324626), we get a palindrome (657747756).

The spelling of 626423130 in words is "six hundred twenty-six million, four hundred twenty-three thousand, one hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 211 422 633 1055 1266 1899 2110 3165 3798 6330 9495 18990 32987 65974 98961 164935 197922 296883 329870 494805 593766 989610 1484415 2968830 6960257 13920514 20880771 34801285 41761542 62642313 69602570 104403855 125284626 208807710 313211565 626423130