Search a number
-
+
19293102220 = 2257219686839
BaseRepresentation
bin10001111101111101…
…010110000010001100
31211210120101010210111
4101331331112002030
5304003013232340
612510234045404
71252046443300
oct217575260214
954716333714
1019293102220
1182004a9287
1238a5279864
131a860c1a22
14d10473d00
1577db84aea
hex47df5608c

19293102220 has 36 divisors (see below), whose sum is σ = 47130294960. Its totient is φ = 6614777568.

The previous prime is 19293102211. The next prime is 19293102253. The reversal of 19293102220 is 2220139291.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9842440 + ... + 9844399.

It is an arithmetic number, because the mean of its divisors is an integer number (1309174860).

Almost surely, 219293102220 is an apocalyptic number.

19293102220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19293102220 is an abundant number, since it is smaller than the sum of its proper divisors (27837192740).

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

19293102220 is a wasteful number, since it uses less digits than its factorization.

19293102220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19686862 (or 19686853 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The spelling of 19293102220 in words is "nineteen billion, two hundred ninety-three million, one hundred two thousand, two hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 49 70 98 140 196 245 490 980 19686839 39373678 78747356 98434195 137807873 196868390 275615746 393736780 551231492 689039365 964655111 1378078730 1929310222 2756157460 3858620444 4823275555 9646551110 19293102220