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19005382088 = 2371182937217
BaseRepresentation
bin10001101100110011…
…110001110111001000
31211001111222102222022
4101230303301313020
5302410334211323
612421515144012
71241654040140
oct215463616710
954044872868
1019005382088
118073051950
123824a45008
131a3b603424
14cc4179920
1576379e4c8
hex46ccf1dc8

19005382088 has 64 divisors (see below), whose sum is σ = 44482953600. Its totient is φ = 7395563520.

The previous prime is 19005382069. The next prime is 19005382157. The reversal of 19005382088 is 88028350091.

It is a super-2 number, since 2×190053820882 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 492056 + ... + 529272.

It is an arithmetic number, because the mean of its divisors is an integer number (695046150).

Almost surely, 219005382088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19005382088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22241476800).

19005382088 is an abundant number, since it is smaller than the sum of its proper divisors (25477571512).

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

19005382088 is a wasteful number, since it uses less digits than its factorization.

19005382088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38070 (or 38066 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 44.

The spelling of 19005382088 in words is "nineteen billion, five million, three hundred eighty-two thousand, eighty-eight".

Divisors: 1 2 4 7 8 11 14 22 28 44 56 77 88 154 308 616 829 1658 3316 5803 6632 9119 11606 18238 23212 36476 37217 46424 63833 72952 74434 127666 148868 255332 260519 297736 409387 510664 521038 818774 1042076 1637548 2084152 2865709 3275096 5731418 11462836 22925672 30852893 61705786 123411572 215970251 246823144 339381823 431940502 678763646 863881004 1357527292 1727762008 2375672761 2715054584 4751345522 9502691044 19005382088