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19300030220 = 2253179394039
BaseRepresentation
bin10001111110010111…
…110001011100001100
31211211001102010020002
4101332113301130030
5304011301431340
612511042343432
71252162356452
oct217627613414
954731363202
1019300030220
1182044003a9
1238a765ab78
131a87679233
14d113589d2
1577e5a2715
hex47e5f170c

19300030220 has 48 divisors (see below), whose sum is σ = 42367180800. Its totient is φ = 7376391360.

The previous prime is 19300030219. The next prime is 19300030223. The reversal of 19300030220 is 2203000391.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 19300030192 and 19300030201.

It is not an unprimeable number, because it can be changed into a prime (19300030223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148040 + ... + 245999.

It is an arithmetic number, because the mean of its divisors is an integer number (882649600).

Almost surely, 219300030220 is an apocalyptic number.

19300030220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19300030220 is an abundant number, since it is smaller than the sum of its proper divisors (23067150580).

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

19300030220 is a wasteful number, since it uses less digits than its factorization.

19300030220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394158 (or 394156 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

The spelling of 19300030220 in words is "nineteen billion, three hundred million, thirty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 31 62 79 124 155 158 310 316 395 620 790 1580 2449 4898 9796 12245 24490 48980 394039 788078 1576156 1970195 3940390 7880780 12215209 24430418 31129081 48860836 61076045 62258162 122152090 124516324 155645405 244304180 311290810 622581620 965001511 1930003022 3860006044 4825007555 9650015110 19300030220