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30030173185 = 547211324061
BaseRepresentation
bin11011111101111100…
…000001010000000001
32212111212001212012111
4123331330001100001
5443000211020220
621443510455321
72112114155215
oct337574012001
985455055174
1030030173185
1111810282651
1259a1064541
132aa76cab5c
14164c460945
15bab5d915a
hex6fdf01401

30030173185 has 24 divisors (see below), whose sum is σ = 37146626856. Its totient is φ = 23303938560.

The previous prime is 30030173183. The next prime is 30030173197. The reversal of 30030173185 is 58137103003.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3523728321 + 26506444864 = 59361^2 + 162808^2 .

It is not a de Polignac number, because 30030173185 - 21 = 30030173183 is a prime.

It is a super-2 number, since 2×300301731852 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30030173183) 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, 1236055 + ... + 1260115.

It is an arithmetic number, because the mean of its divisors is an integer number (1547776119).

Almost surely, 230030173185 is an apocalyptic number.

It is an amenable number.

30030173185 is a deficient number, since it is larger than the sum of its proper divisors (7116453671).

30030173185 is a wasteful number, since it uses less digits than its factorization.

30030173185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24273 (or 24226 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

Adding to 30030173185 its reverse (58137103003), we get a palindrome (88167276188).

The spelling of 30030173185 in words is "thirty billion, thirty million, one hundred seventy-three thousand, one hundred eighty-five".

Divisors: 1 5 47 113 235 565 2209 5311 11045 24061 26555 120305 249617 1130867 1248085 2718893 5654335 13594465 53150749 127787971 265753745 638939855 6006034637 30030173185