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19190772384 = 2537223891993
BaseRepresentation
bin10001110111110110…
…111111001010100000
31211112102211020122120
4101313312333022200
5303300314204014
612452140504240
71246364605500
oct216766771240
954472736576
1019190772384
118158766373
123876b4b080
131a6ab43924
14d00a37a00
15774bbeba9
hex477dbf2a0

19190772384 has 288 divisors, whose sum is σ = 61866322560. Its totient is φ = 5183152128.

The previous prime is 19190772373. The next prime is 19190772409. The reversal of 19190772384 is 48327709191.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9628092 + ... + 9630084.

It is an arithmetic number, because the mean of its divisors is an integer number (214813620).

Almost surely, 219190772384 is an apocalyptic number.

19190772384 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19190772384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30933161280).

19190772384 is an abundant number, since it is smaller than the sum of its proper divisors (42675550176).

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

19190772384 is a wasteful number, since it uses less digits than its factorization.

19190772384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2132 (or 2117 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 51.

The spelling of 19190772384 in words is "nineteen billion, one hundred ninety million, seven hundred seventy-two thousand, three hundred eighty-four".